The children _______ a PE class on the playground when it suddenly began to rain.
#42155
A
have
B
are having
C
had
D
were having
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—What’s Jim doing now  ?—He ________ TV with his father in the living room.
#42460
A
is watching
B
are watching
C
is watch
D
are watch
What’s Jim doing over there?  He’s_______ his friends.
#39853
A
talking
B
talking with
C
talks
D
talk
Great changes         in China since 1978.
#39803
A
took place
B
has happened
C
have taken place
D
happened