20. There is a student __________ in the classroom. He is a hard-working boy.(A)study(B)studies(C)st

問題詳情

20. There is a student __________ in the classroom. He is a hard-working boy.
(A)study
(B)studies
(C)studying
(D)to study

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is後面接現在進行式所以.....看完整...

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