On the way to the post office, I heard some children ________the English song.
#48666
A
sang
B
to sing
C
singing
D
sings
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When the teacher came in, he saw some boys _______ behind Daniel, _______ the computer games. 
#50360
A
sit, watching
B
sitting, watching
C
sit, to watch
D
sitting, watched
It took Andy two hours ____ his homework yesterday evening and I spent ____ mine. .
#50990
A
doing; less time finishing
B
doing; more time to finish
C
to do; more time to finish
D
to do; less time finishing