問題詳情
【題組】3.In the four years from 1989 to 1992, the gross national product _______ by an average of over 10% per year.
(A)falls
(B)fell
(C)is falling
(D)will fall
參考答案
答案：B
難度：適中0.619469
統計：A(38),B(140),C(35),D(13),E(0)
用户評論
【momou】評論
1989 to 1992已過去,所以用過去式。 fall fell fallen。