Whatwere you doing when the teacher ______ ?[ ]A. was coming inB. came in C. had come inD. comes in-

题目简介

Whatwere you doing when the teacher ______ ?[ ]A. was coming inB. came in C. had come inD. comes in-

题目详情

What  were you doing when the teacher ______ ?
[     ]
A. was coming in    
B. came in  
C. had come in      
D. comes in
题型:单选题难度:中档来源:广东省同步题

答案

B

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