—I________ you for a long time.  --Oh, I_______ in Beijing. I’ve just come back.
#37537
A
haven’t seen; am
B
didn’t see; will be
C
haven’t seen; was
D
haven’t seen; have been
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Look! Jack and his monkey _________ flying disk together in the garden. 
#42280
A
is playing
B
was playing
C
are playing
D
were playing
__________ did your uncle leave his hometown ? He _________ for nearly 20years .
#37368
A
When , has left
B
When , has been away
C
How long , has left
D
How long , has been away