题目内容

1a. Light travels faster than..

A. sound
B. a sound

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1b. Be quiet, please. I don’t want to hear .

A. sound
B. a sound

2a. After a big meal, you should take .

A. rest
B. a rest

2b. Everybody needs food, drink and.

A. rest
B. a rest

4a. Are you busy? Have you got?

A. a job
B. work