12.He ___ in the factory for three years before he joined the Army.

A. has worked　　　 B. works　　　　 C. had worked　　　　 D. will work

11. What _______ Annie ____ by the time he was ten?

A. did, do　　　　 B. did, did　　　　 C. has, done　　　　 D. had done

10. He _____ to play ____ before he was 11 years old.

A had learned, piano　　　 B. had learned, the piano　　　 C. has learned, the piano　　 D. learns ,piano.

9. She had written a number of books ______ the end of last year.

A. for　　　　　　　　 B. in　　　　　　　 C. by　　　　　　　 D. at

8. By the time he was ten years old, he _________.

A. has completed university　 B. has completed the university C. had completed an university　 D. had completed university

7. She said her family _______ themselves ______ the army during the war.

A. has hidden, from　　　 B. had hidden, from　　　 C. has hidden, with　　　 D. had hidden, with

6. She said she __________ the principle already

A .has seen　　　　　 B. saw　　　　　　 C. will see　　　　　　 D. had seen

5. By the time my parents reached home yesterday, I _____ the dinner already.

A had cooked　　　　 B. cooked　　　　 C. have cooked　　　　 D. was cooked

4. She ______lived here for ______ years.

A. had, a few　　　 B. has, several　　　 C. had, a lot of　　　　　 D. has, a great deal of

3. I ______ 900 English words by the time I was ten。

A. learned　　　　　 B. was learning　　　 C. had learned　　　　 D. learnt