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21．--I called you at seven yesterday evening.but there was no answer．--Oh.I am sorry．I dinner at my friend's home．A．a(chǎn)m having B．hadC．was having D．have had 【查看更多】

 

題目列表(包括答案和解析)

--I called you at seven yesterday evening，but there was no answer．

--Oh，I am sorry．I _______ dinner at my friend's home．

A．a(chǎn)m having                                 B．had

C．was having                                  D．have had

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