問題詳情

18.I’ve spent almost 30 minutes _______the question. _______ difficult the question really is!
(A) in ; How 
(B) at ; What
(C) on ; How 
(D) on ; What

參考答案

答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

內容推薦