2019年mpa考试英语真题——介词和介词短语435

{01}We shouldn’t do that dangerous experiment ________ the teacher is with as．
A.if not
B.if
C.unless
D.as long as
解析：
本题选C。
{02}They couldn’t agree with each other and finally a quarrel ________ between them．
A.broke up
B.broke down
C.broke out
D.broke in
解析：
本题选C。