He told me to wake up if he ______.
A. sleep
B. slept
C. is sleeping
D. was sleeping
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I’d rather (宁可) you ______ at once.
A. are going
B. were going
C. will go
D. would go
By the time he was 4, he ______ a lot of German words.
A. had learned
B. has learned
C. learned
D. learns
What _____ Annie ______ by the time he was ten?
A. did, do
B. did, did
C. has, done
D. had, done
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
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