单选题
I"m very sorry I"m late. I ______ and told you I was coming.
A、
ought to phone you
B、
must phone you
C、
ought to have phoned you
D、
must have phoned you
【正确答案】
C
【答案解析】
很抱歉我迟到了。我应该打电话告诉你我要来的。此处使用了虚拟语气,情态动词ought to后接现在完成时表示过去该做而没做某事。
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