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--Why do the children look sad? --They play football in the playground these days. A. allow to B. don't allow to C. are not allowed to D. are allowed to 【查看更多】

 

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--Why do the children look sad?

--They __ play football in the playground these days.

A. allow to

B. don't allow to

C. are not allowed to 

D. are allowed to

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