I ____ Australia twice. What about you?
A. went to
B. have been to
C. had been to
D. would go to
— I’m sorry you have missed the bus. It ____ a few minutes ago.— What a pity!
A. has left
B. had left
C. was leaving
D. left
He ____ to play the piano before he was 11 years old.
A. learned
B. had learned
C. has learned
D. learns
Before liberation we ____ in Beijing for five years.
A. have lived
B. lived
C. had lived
D. were living
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