問題詳情
31.The people__________ the acrobat turn circles in the air were horrified whenhe missed the outstretched hands of his partner and fell to his death.
(A) watched
(B) had watched
(C) watching
(D) were watching
參考答案
答案：C
難度：困難0.298507
統計：A(25),B(34),C(40),D(18),E(0)