Students don't alow_____answers in the exam.A.to copyB.copying为什么?

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Studentsdon''talow_____answersintheexam.A.tocopyB.copying为什么?Studentsdon''talow_____answersintheexam.A

Students don't alow_____answers in the exam.A.to copyB.copying为什么?
Students don't alow_____answers in the exam.
A.to copy
B.copying
为什么?

Students don't alow_____answers in the exam.A.to copyB.copying为什么?
选B
allow vi.允许,准许
用法:
allow doing=allow sb. to do
allow for sth. 允许某事
allow doing sth. 允许做某事
They don't allow smoking here.=They don't allow others to smoke here
allow sb. to do sth. 允许某人做某事
(注意被动:sb. be allowed to do sth.)

选B allow doing sth.
如果用A的话,句子应该是这样
Students ARE NOT allowed TO COPY answers in the exam