My last job lacked variety; I __________ the same things all the time.
#100357
A
did
B
have done
C
was doing
D
have been doing
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Helen ________ her keys in the office so she had to wait until her husband ______ home. 
#101502
A
has left; comes
B
left; had come
C
had left; came
D
had left; would come
— Have you got any job offers?— No. I ______.
#101443
A
waited
B
was waiting
C
have waited
D
am waiting
By the time he arrives in Beijing, we ______ here for two days.
#100865
A
will have stayed
B
will be staying
C
have been staying
D
have stayed