2019年mpa考试英语真题——连词369

{01}The school rules state that no child shall be allowed out of the school during the day, ________
accompanied by an adult.
A.once  
B.when
C.if  
D.unless
解析：
本题选D。

{02}He had no sooner finished his speech ________ the students started cheering.
A.since  
B.as
C.when  
D.than
解析：
本题选D。