题目内容

There is a picture ___ the wall.

A. on
B. in
C. of

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There is a nail(钉子) ___ the wall.

A. on
B. in
C. of

There ___ some milk in the bottle.

A. is
B. are
C. be

I’ve never been good ___ singing, but I kike to listen to it.

A. at
B. about
C. of

You ___ not play in the street. It’s not safe.

A. can
B. must
C. need

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