問題詳情

21. You ought to stop ______ so much about things that haven’t happened, or you maybecome really depressed.
(A) worry
(B) to worry
(C) worried
(D) worrying

參考答案

答案：D
難度：適中0.615385
統計：A(2),B(0),C(2),D(8),E(0)