2019年mpa考试英语真题——连词501

{01}It just isn"t fair      I was working as a waiter last month, my friends were lying on the beach.
[      ]
A.whenever          
B.though        
C.while        
D.for
解析：
本题选C。

{02}— I still haven"t decided whether to go or not.    
— But your time is running out. Please make up your mind ______ it is too late.
A.when    
B.since    
C.until    
D.before
解析：
本题选D。