.It is suggested that the students’ homework in time.A. be handed inB. handed inC. handin

问题补充：

.It is suggested that the students’ homework in time.

A. be handed in

B. handed in

C. handing in

D. hand in

答案：

(答案→)A. be handed in

B. handed in

C. handing in

D. hand in

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