题目内容

Fresh air is good ____ your health.

A. at
B. for
C. of
D. to

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The boy is waiting his sister and they will go to the hospital to wait their sick mother.

A. for,on
B. on,for
C. for,for
D. on.on

The group is made upfive students. And they are studying hard to make up the lost time.

A. of,of
B. for,for
C. of,for
D. for,of

The PLA man saved the boy ____ death.

A. of
B. from
C. to
D. on

He will come ____ three days.

A. before
B. after
C. in
D. later