I. Điền dạng thích hợp của to be: am,is,are,was,were vào chỗ cần thiết hoặc ghi / vào chỗ không cần:
1. I....used to live in America, but now I live in France.
2. I....used to sitting at this desk.I sit here everyday.
3. I....used to sit in the back of the classroom, but now I prefer to sit in front of row.
4. When I was a child, I....used to play games with my friends in a big field near my house after school everyday.
5. It's hard for my children to stay inside on a cold, rainy day.They....used to playing outside in the big field near our house. They play there almost everyday.
6. A teacher....used to answering questions. Students,especially good students, always have a lot of questions.
7. People....used to believe the world was flat.
8. Mrs Brown....used to do the cooking for her family.
9. She....used to travelling by plane.
10. You and I are from different cultures. You....used to having fish for breakfast. I....used to having cheese and bread for breakfast.
1.was
2.am
3.was
4. was
5.are
6.is
7.was
8.is
9.is
10.are/am