> 英语 >
each of the students,working hard at their lessons,______ the book.
A.is reading
B.has read
C.reading
D.reads
为甚麼选B不选D?
人气:347 ℃ 时间:2019-10-17 07:59:12
解答
A.is reading
应先在进行时态
each of 后面用单数 用is
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