By the end of 1976, many buildings _____built in the city.
A. have been
B. have
C. had been
D. will
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They on the program for almost one week before i joined them, and now we on it as no good results have come out so far.
A. had been working; are still working
B. had worked; were still working
C. have been working; have worked
D. have worked; are still working
Father for London on business upon my arrival, so I didn’t see him.
A. has left
B. left
C. was leaving
D. had left
They received the parcel that they for a long time.
A. expected
B. have expected
C. had been expecting
D. had expected
It for four days when we arrived, so the roads were very muddy.
A. was raining
B. would be raining
C. had been raining
D. has rained