問題詳情

25. The baby ________ for one hour by the time his mom came back home.
(A)cried
(B) was crying
(C) had been crying
(D) has cried

參考答案

答案：C
難度：適中0.672956
統計：A(13),B(46),C(214),D(45),E(0)

用户評論

【寂寞行星】評論

 [ By the time ]引導的子句描述過去，主要子句要用過去完成式。例句如下： a) By the time I finished my homework, my young brother had gone to bed. b) By the time I got to Maggie’s place, she and her friends had all waited for me.