1. By the time he was ten years old, he ______.
A. has completed university B. has completed the university
B. had completed an university D. had completed university
2. She had written a number of books _____ the end of last year.
A. for B. in
C. by D. at
3. 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.
4. What ______ Annie ____ by the time he was ten?
A. did, do B. did, did
C. has, done D. had done
5 .He ___ in the factory for three years before he joined the Army.
A. has worked B. works
C. had worked D. will work
6. By the end of last week, they ___ the bridge.
A. has completed B. completed
C. will complete D. had completed
7. Ben hates playing ____ violin, but he likes playing ____ football.
A. a…the B. the… the
C. / …the D. the…/