题目内容

Some policemen should be sent to _______ them _______ the animals.
A.prevent; to killB.stop; killing
C.keep; to killD.keep; killing
B
句意:警察应该被派去阻止他们杀害动物。阻止某人做某事,用stop…(from)doing;prevent…(from)doing;keep…from doing.所以选B。
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