题目内容
【题目】—Why! I couldn’t get you on the phone this morning.
—We ________ tennis in the yard when you phoned me.
A. could be playing
B. must be playing
C. must have been playing
D. should have played
【答案】C
【解析】
试题分析:考查情态动词和时态。句意:——为什么今天早上打电话找不到你?——你给我打电话的时候我们一定是在院子里打网球。must have done表示肯定做了某事;must have been doing表示当时肯定在做某事。答句强调你打电话的这个时间点我们正在做某事,所以要用must have been doing形式。故选C。
练习册系列答案
相关题目