2019年mpa考试英语真题——介词和介词短语484

{01}It wasn’t until nearly a fortnight later ________ I received the CD I booked on the Internet．
A.since
B.when
C.that
D.as
解析：
本题选B。
{02}I was doing my homework ________ I heard someone knocking at the door．
A.while
B.when
C.unless
D.if
解析：
本题选B。