- What were you doing when Mike you last night? - I was brushing my teeth. A.was phoning B.phoned C.is phoning D.phones 查看更多

 

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—What were you doing when Mike ______ you last night?
—I was brushing my teeth.  

[     ]

A. was phoning  
B. phoned  
C. is phoning  
D. phones

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