By the time you get back, great changes_________________ (take place) in this area.
A. will have taken place
B. have taken place
C. will take place
D. had taken place
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She told me her name only after I ________ (ask) her twice.
A. has asked
B. is asking
C. had asked
D. asked
He said he _______________ (write) a report since two o’clock that morning.
A. had been writing
B. has been writing
C. is writing
D. has written
When she was here, she always___________ (complain) about the living condition.
A. complains
B. is complaining
C. has complained
D. complained
That was the second time I _________ (be) abroad.
A. has been
B. had been
C. has
D. am
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