By the time I left the school I __________ that course for ten years.
A. taught
B. have taught
C. had taught
D. teaches
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She asked the worker how long _______ to build the church.
A. it would take
B. had it taken
C. it takes
D. it had taken
Mary couldn't open the front door because she _______ the key.
A. had forgotten
B. was forgetting
C. has forgotten
D. forgot
They told us that they _________ for more than two hours.
A. had been waiting
B. were waiting
C. have waited
D. has waited
Did you do what l _________ you to do yesterday?
A. have told
B. had told
C. had been telling
D. tells
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