What's_____ that girl? She looks very sad.[ ]A. happen to B. happening toC. happenedD. happenin

题目简介

What's_____ that girl? She looks very sad.[ ]A. happen to B. happening toC. happenedD. happenin

题目详情

What's _____ that girl?   She looks very sad.

A. happen to                  
B. happening to
C. happened                    
D. happening
题型:单选题难度:中档来源:同步题

答案

B

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