题目内容

Not until after 3 days did he ________ that he had made a mistake.

A. think
B. conscious
C. show
D. realize

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You have to ________ these materials better if you want to write the paper well.

A. receive
B. perform
C. organize
D. produce

Remember ________ the light when you leave the room.

A. turn off
B. to turn off
C. turning off
D. turned off

The teacher’s questions were challenging, but Smith answered them ________.

A. intelligent
B. diligence
C. intelligently
D. diligently

Smith has no money to buy a bike, ________ a car.

A. not mention
B. let alone
C. neither is
D. nor does

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