问一道英语单选题,请解释下原因,
The security of the babies is supposed to ___ by the nurses.
A.see to B.be seen to
C.be seeing to D.be seen
人气：231 ℃ 时间：2020-06-08 09:37:36
解答
1. be supposed to do sth. 应该做某事
2. 小孩是被照顾的,所以用被动语态,所以排除 A,C
3. see to sb./sth.负责,照顾,注意
综上所述,选B
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