题目内容
【题目】Older people ________ well.
A.looks after
B.must be looked after
C.must look after
D.looked after
【答案】B
【解析】句意：老人必须得到很好的照看。older people与look after构成被动关系，含情态动词的被动结构为：情态动词+be+过去分词。故选B。
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【题目】Older people ________ well.
A.looks after
B.must be looked after
C.must look after
D.looked after
【答案】B
【解析】句意：老人必须得到很好的照看。older people与look after构成被动关系，含情态动词的被动结构为：情态动词+be+过去分词。故选B。