The form. ______in and returned within three weeks.
A.is to be filled
B.will fill
C.is to fill
D.are going to be filled

A.A.is
B.will
C.is
D.are

【参考答案】

A
解析：时间状语within three weeks，表示将来的一段时间。be to表示将来一段时间内必定要进......

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