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—Whendidtheclassroomhaveapowercut?—Thismorning,whilewe

欄目: 練習題 / 釋出於: / 人氣:2.45W

問題詳情:

—Whendidtheclassroomhaveapowercut?—Thismorning,whilewe

—When did the classroom have a power cut?

—This morning, while we ________ a physics lesson.

A. have had            B. were having            C. are having             D. will have

【回答】

B

知識點:動詞時態

題型:選擇題