27. which => who

28. was => were

29. for => on

30. cooker => cook

1I thought I recognized the assistant which served us. => who

2) The twentieth century was the time when there was a lot of important events.  => were

3) Tom has got the job. You must congratulate him for his success. => on

4) The cooker who is in the kitchen doesn't work anymore.=> cook

*Nhanh tay vch

1, Air ___ is causing many environtmental problems in our cities today

=> Chọn B : pollution

Ô nhiễm không khí đang gây ra nhiều vấn đề về môi trường ở các thành phố của chúng ta ngày nay

ý B nha anh ơi đúng đó

* mình giải thích ở bên dưới bài làm nhé!

1.Đọc đoạn văn và chia động từ trong ngoặc cho phù hợp

Harold Black’s a famous pianist. He (1)..............gives.......(give) two or three concerts every week. He (2)...........travels..........(travel) a lot and this week he’s in New York. He (3).........is staying............(stay) at an expensive hotel. He’s at his hotel now. He (4)......is having..............(have) his breakfast in the dining room. He (5).............is drinking........(drink) a cup of coffee and he (6)........is reading.............(read) a newspaper. Harold’s always very busy. He (7).........plays............(play) the piano regularly. He (8).......practises..............(prace) for four hours everyday, He (9)...........doesn't go..........(go) to bed late and he always (10).........gets............(get up) early. But he sometimes (11).........gets............(get) dressed too quickly and this morning he (12)............is wearing.........(wear) one blue sock and one red one!

* Những câu :1,2,7,8,9,11,12 chia về thì hiện tại đơn vì là những hành động thường xuyên xảy ra và lặp lại ở hiện tại cũng như trong tương lai 

* Nhnugwx câu còn lại chia to be + V-ing vì là hiện tại tiếp diễn, diễn tả những hành động đang xảy ra.

1.Đọc đoạn văn và chia động từ trong ngoặc cho phù hợp

Harold Black’s a famous pianist. He (1) gives (give) two or three concerts every week. He (2) travels (travel) a lot and this week he’s in New York. He (3) is staying (stay) at an expensive hotel. He’s at his hotel now. He (4) is having (have) his breakfast in the dining room. He (5) is drinking (drink) a cup of coffee and he (6) is reading (read) a newspaper. Harold’s always very busy. He (7) plays (play) the piano regularly. He (8) practises (prace) for four hours everyday, He (9) goes (go) to bed late and he always (10) gets up (get up) early. But he sometimes (11) gets (get) dressed too quickly and this morning he (12) is wearing (wear) one blue sock and one red one!

1.1 B

1.2 D

1,3 D

1.4 A

1.5 B

1.6 C

1.7 C

1.8  B

1.9 A

1.10 A

1.1.

c.playing 

1.2.

D.has

1.3

D.having

1.4.

A.has

1.5.

B.do

1.6.

ko bít

1.7.

C.plays

1.8.

ko bít

1.9.

A.studying

1.10.

A.play

( e ko chắc ạ, cs j sai mong a bỏ qua)

Answer the questions below

The first steam-powered machine was built in 1698 by the English military engineer Thomas Savery. He called it “water by fire”.His invention, designed to pump water out of coal mines, was known as the Miner‟s Friend. But because the engine‟s pressure was too strong, it often caused explosions. Then in 1712, an English engineer, Thomas Newcomen (N-E-W-C-O-M-E-N) invented a more effective and pracal steam engine.The Newcomen engine remained in use for more than 50 years but they turned out to be inefficient as a lot of energy was required for the engine to run effectively. Indeed, the most important improvement in steam engine design was brought about in 1781 by the Scottish engineer James Watt (J-A-M-E-S W-A-T-T). He revolutionized the steam engine by making use of a separate condenser in the original design. When the financial backing became available, the engine was finally introduced in railways and ships. There were over 60,000 cars powered by steam during the years from 1897 to 1927 in the United States.

1.   What was the first steam machine called?

=> the first steam machine called   “water by fire”.

      2.   What was the limitation of the first steam engine?

=> pressure was too strong, it often caused explosions

      3.   For how long was the Newcomen machine used?

=> For 14 years

      4.   What means of transport was the James Watt machine applied in?

=> the James Watt machine applied in railways and ships.

      5.   How many cars were there run by steam between 1897 and 1927 in America?

=>  There were over 60,000 cars were there run by steam between 1897 and 1927 in America

      1.   What was the first steam machine called?

           It was called "water by fire"

      2.   What was the limitation of the first steam engine?

           The engine‟s pressure was too strong and it often caused explosions.

      3.   For how long was the Newcomen machine used?

           For 14 years

      4.   What means of transport was the James Watt machine applied in?

           It was applied in railways and ships

      5.   How many cars were there run by steam between 1897 and 1927 in America?

           There were over 60,000 cars powered by steam during the years from 1897 to 1927 in America

14. It is natural that a child had better respect his parents.

15. it is necessary that he come to the interview early.

16. It is important that she take two medicines every day.

1. The teacher said to us : "Don't look at your friend's paper test"

=> The teacher asked us not to look at my friend's paper test

2. The man said : "Please tell me the way to the post office"

=> The man told me to tell him the way to the post office

3. They said to me : "Don't drive to fast, please"

=> They told me not to drive to fast

1. The teacher asked us not to look at our friend's paper test.

2. The man told me to tell him the way to the post office.

3. They told me not to drive too fast.

Trả lời: 

MUSIC-> musician

for music

lên google đi em thiếu gì :]]

Google toàn cấu trúc thường thôi ah '-'

có nghĩa là cảm xúc

là cảm xúc, dễ chịu v.v