He was ___ by all the people there.
A.listened to
B.to be listened
C.listened
D.listening

Jack ___ for his friend since 9 o’clock.
A.has been waiting
B.is waiting
C.wait    
D.waits

Alex didn’t come to see the film last night because he ___ it before.
A.saw
B.was seen
C.has seen
D.had seen

We searched everywhere for the dog, but it was ___.
A.not to find
B.not to be found
C.to be not found
D.to have not found

John and Mary ___ each other since 1976.
A.have been knowing
B.were knowing
C.have known
D.were known

He ___ reading for two hours when she came in.
A.has been
B.had been
C.was
D.will be

Who was the first person ___ the South Pole?
A.reaching
B.to reach
C.reached
D.who reaches

If I ___ you, I would not have said such nonsense.
A.am
B.have been
C.will be
D.had been

If you have any problem, don't worry, I.... you
A.have helped
B.don’t help
C.will help
D.will have helped

By the time they arrive at the village, all the villagers (leave) for another valley.
A.are leaving
B.will leave
C.have left
D.will have left