题目内容
Students are often asked ________ loudly in the library. They must keep quiet whenever they come into the library to borrow books.
[ ]
A.to speak
B.not to speak
C.no speaking
D.to not speak
答案:B
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解题点拨 ask somebody not to do something意为叫某人不要做某事,是ask somebody to do something的否定形式;其一般过去时的被动语态形式为. |
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