He ________ (drive) his car for 10 minutes when he realized it had a flat tyre.
A.had been driving
B.had driving
C.has driven
D.had driven

The secretary (not leave) ___________ until she (finish) _________ her work.
A.hadn’t left – finished
B.doesn’t leave – finished
C.didn’t leave – had finished
D.wasn’t leaving – finished

No sooner they (sell) ______ their car than they (regret) ________ having done so.
A.sold – regretted
B.sell – regretted
C.sold – had regretted
D.had they sold – regretted

As long as one group (prepare) ______ dinner, the others (collect) ______wood for their campfire.
A.has prepared – collect
B.had prepared – collected
C.was preparing – were collecting
D.prepared – collected

They (be married) ________ for five years when they finally (have) ________ a child.
A.had been married – had
B.were married – had
C.were married – had had
D.had been married – had had

The weather (be) ________ far worse than we (expect) _______.
A.had been – expected
B.was – had expected
C.is – expects
D.had been – had expected

John _______ (play) tennis for 4 hours when he broke his leg.
A.had played
B.have been played
C.had been playing
D.has played

The couple scarcely (enter) ___________ the house when they (begin) _________ to argue.
A.have entered – begin
B.had entered – began
C.had entered – had begun
D.entered – began

I ______ my document before the power went out in the computer lab.
A.had saved
B.have saved
C.had save
D.saved

The teacher (ask) _________ the boy why he (not do) ______ his homework.
A.asks – hadn’t done
B.
C.asked – didn’t do
D.asked – hadn’t done