--- What should I do, doctor? --- healthy, you should take more exercise.
#50593
A
Keep
B
To keep
C
Keeping
D
To keep out
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Don’t throw away the waste paper. It needs so that it can be reused.
#49285
A
to destroy
B
destroying
C
to collect
D
collecting
Do you enjoy _________？
#49352
A
to sing and dance
B
singing and dancing
C
to sing and dance
D
sing and dancing