1.D 2.C 3.C 4.B 5.B

V.Choose the best answer.

1.It took him two hours to do his homework.

A.He did his homework two hours ago.

B.He finished his homework two hours ago

C.He did his homework in two hours

D.He spent two hours doing his homework

2.The exam lasted three hours.

A.We finished the exam at three o'clock

B.It is a three-hours exam

C.It is a three-hour exam

D.It takes us three hours to take the exam

3.I used to live in Santa Clara valley

A.I'm used to living in Santa Clara valley

B.I'm living in Santa Clara valley

C.I once lived in Santa Clara valley but no longer live there

D.I've always lived in Santa Clara valley

4. We satrted to write to each other three years ago

A.We used to write to each other for three years

B.we have written to each other for three years

C. we have written to each other since three years

D.We used to write to each other in three years

5. "Don't walk on the grass" the gardener said to us.

A.The gardener said to us don't walk on the grass

B.The gardener told us not to walk on the grass

C.The gardener suggested us not to walk on the grass

D.The gardener advised us not walking on the grass