题目内容

Let everybody ______ something to reduce environmental pollution.

A. do
B. to do
C. doing
D. done

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The environment on this planet is worsening, for few people ______ measures to protect it in the last twenty years.

A. takes
B. took
C. have taken
D. should taken

I would advise that every teacher ______ further academic research aboutteaching methods because that will guarantee his success.

A. doing
B. to do
C. do
D. did

A fashion designer had better ______ up to date with emerging fashion trends.

A. keep
B. to keep
C. keeping
D. kept

Would you please inform ______ visitors that the China Pavilion will be closed temporarily (暂时地) ?

A. another
B. the other
C. others
D. the others