2. 职称英语
  3. ______ of them are doing homework at home.A、EachB、BothC、EveryB选项A“Each of the

______ of them are doing homework at home.A、EachB、BothC、EveryB选项A“Each of the

游客2025-07-03  23
问题 ______ of them are doing homework at home.
选项 A、Each
B、Both
C、Every
答案 B
解析 选项A“Each of them”后面谓语动词应为单数。选项C“Every”后面应加单数可数名词。这两个选项均可排除。只有选项B“Both”表示“两者都”，后面be动词用复数，符合题意，故选B。
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