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