单项选择题

There is not much time left for you to cover everything, you'd better ______ unimportant points.（）

A. leave off
B. focus on
C. leave out
D. concentrate on

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单项选择题
-Have you seen him recently -Yes. I met him at ______ this morning.（）

A. tailor's
B. a tailor's
C. the tailor
D. the tailor's
单项选择题
The weather being unfavorable, they had to ______ the sports meet.（）

A. put on
B. put up
C. put out
D. put off
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