题目内容
I set up email addresses for connecting with my parents last May. But I didn’t write to them as often as I ______.
A. should B. must have C. should have D. must
【答案】
C
【解析】
试题分析:考查情态动词的完成式:句意:去年五月我给父母发了一份电子邮件想和他们联系,但是我没有象应该的那样经常给他们写信。因为讲的是过去的事情,所以是情态动词的完成式,排除AD项,must have done过去一定做过…,should have done本应该做而没有。选C。
考点:考查情态动词的完成式
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