题目内容

The teacher doesn’t permit _______ in class.

A. to smoke
B. smoke
C. smoking
D. to have a somke

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I like _______ football, but I don’t like _______ it today because it’s been raining.

A. playing…playing
B. to play…to play
C. playing…to play
D. to play…playing

Try ______ the back door if nobody hears you at the front door.

A. to knock at
B. knock at
C. knocking at
D. knocked at

These language points deserve _______.

A. to mention
B. mention
C. mentioned
D. mentioning

They don’t allow ________ in the library, but they allow people ______in the restroom.

A. to smoke…to smoke
B. to smoke…smoking
C. smoking…smoking
D. smoking…to smoke

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