Theboywasplayingwithadog______aUFOarrived. [ ]A.thatB.whileC. whenD.so -八年级英语

题目简介

Theboywasplayingwithadog______aUFOarrived. [ ]A.thatB.whileC. whenD.so -八年级英语

题目详情

The boy was playing with a dog ______ a UFO arrived. 
[     ]
A. that   
B. while  
C. when  
D. so
题型:单选题难度:中档来源:同步题

答案

C

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