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Our teacher often asks us____________ questions in groups.
#49258
A
discuss
B
to discuss
C
discussing
D
discussed
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I used to spend a lot of time ________ computer games.
#48949
A
to play
B
play
C
playing
D
played
The doctor did what he could ___________ the kid.
#49829
A
save
B
to save
C
saved
D
saving
There are some boys ________ in the river.
#51303
A
swimming
B
to swim
C
are swimming
D
is swimming
Students in the USA spend     time      their homework than we do.　    
#50319
A
little , to do
B
little, doing
C
less , doing
D
less , do
 ——would you like somewhere__________?——No, thanks. I have a big room ________.
#48887
A
live ,live
B
to live , to live
C
living, to live
D
to live , to live in