Bài 3: Choose the correct answer.
1. People ____ that the earth is around before.
a. Did not use to believe
b. Used ti believing.
c. Would not use ti believe
d. Were not used to believe.
2. Astronauts ____ in their space ship, but they frequently work outside now.
a. Has used to stay.
b. Were staying.
c. Used to stay.
d. Were used to stay.
3. The city girls are used ____ in the field.
a. Used to lie.
b. To working.
c. Would like.
d. To work.
4. Formerly babies ____ of whooping cough.
a. Would die.
b. Used to die.
c. Have died.
d. Both
5. Newton ____ scientific books when a boy.
a. Has read.
b. Read.
c. Had read.
d. Used to read.
Bài 4: Complete these sentences with used to.
1. Used to ride
2. Used to go
3. Used to be
4. Did not used to feel
5. Did you use to play