英语问题,进!1,Childrenunder12yearsofa
1,hildren under 12 years of age in that country____be under adult supervision when in a public library. A.must B.may C.can D.need 我认为是A可答案竟不是
答案是A. may,can 表示可能，用在此处不妥。need作情态动词用于疑问句和否定句此处不是。只有must意思最好。选C我觉得是