2019年mba考试英语模拟题——连词230

{1}I was on the highway _______ this car went past followed by a police car. They ______ at least
150 kilometers an hour.
A.when; should have been driving
B.while; would have driven
C.as; could have driven
D.when; must have been driving
解析：
本题选D。

{2}I had travelled only two hours one day ______ the winds increased so much that I had to put my
tent up _______ the winds became too strong.
A.when , before    
B.when , after    
C.when, until  
D.until , before
解析：
本题选A。