2019年mpa考试英语真题——连词540

{01}He made a mistake, but then he corrected the situation _____ it got worse.
A.until
B.when
C.before
D.as
解析：
本题选C。

{02}_____he has limited technical knowledge, the old worker has a lot of experience.
A.Since
B.Unless
C.As
D.Although
解析：
本题选D。