—Why! I couldn't get you on the phone this morning.—We ________ tennis in the yard when you phoned me.

题型：单选题题类：常考题难易度：普通

江苏省扬州中学2016-2017学年高二上学期英语开学考试试卷

—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

举一反三

—Mum, it's not been decided yet. I ______ continue my study for a higher degree.

—Yes. However, they never do so alone.

—No, I didn't phone you. It someone else.

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