2019年mpacc考试英语真题——连词757

{01}_______you have decided to go, you"d better leave at once in order to avoid the rush hour.
[      ]
A.Now that  
B.Unless  
C.Although  
D.Even if
解析：
本题选A。

{02}The house had been on fire for an hour ________ the firefighters arrived.
A.after
B.before  
C.until
D.while
解析：
本题选B。