all the students in my class always__________hard A.study B.is studying C.will study D.studies
问题描述：
all the students in my class always__________hard A.study B.is studying C.will study D.studies
要说明原因
all the students in my class always__________hard A.study B.is studying C.will study D.studies
答
答案：【 A.study】
说的是同学们努力的状态所以用一般现在时态
all所有,表示的是复数意义所以用复数即原型study
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