We think that the duty of the police is to (sure) ______ that people are protect

游客2023-10-07  23

问题 We think that the duty of the police is to (sure) ______ that people are protected from crime.

选项

答案 ensure

解析 本题测试的是词性转换的用法。句中用be to+动词原形这个不定式作表语,因此形容词sure需转换成动词ensure(确保)。
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