Milk quickly turns sour _____ it's in a fridge.[ ]A. until B. since C. asD. unless-九年级英语

题目简介

Milk quickly turns sour _____ it's in a fridge.[ ]A. until B. since C. asD. unless-九年级英语

题目详情

Milk quickly turns sour _____ it's in a fridge.  
[     ]
A. until                    
B. since  
C. as                          
D. unless
题型:单选题难度:中档来源:同步题

答案

D

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