Question

c

求解為什麼不能用D？

5.
(A) has been desi
(C) was designed
任務
( ) You needn't hurry her; the assignment
(A) will have been finished
(C) will be finishing
(D) would be designed
by her before you call her.
(B) will finish
(D) has been finished
times

Answer 1

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Kate.

因為題目裡面的”before you call her”是將來的事情
代表是未來的某個時刻才會發生
所以要用will have +p.p

has been finished 是現在完成式被動語態，
表示到目前為止已經完成 不符合語意