Hardly _________ our walk when it began to rain.
A. we began
B. we had begun
C. had we begun
D. has we begun
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I was walking along the street _________ I met an old friend.
A. that
B. which
C. while
D. when
He ______ school last year. Now he earns his living as a worker.
A. leaves
B. has left
C. left
D. had left
By the time he ______ to the station, the train _____.
A. go; have left
B. went; have left
C. had come; left
D. went; had left
They ________ in the office this time yesterday evening.
A. still worked
B. has been working
C. were working
D. had been working
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