2019年mpacc考试英语真题——连词2

{01}It was raining hard at that time．________, we had to leave as soon as possible．
A.However
B.Until
C.But
D.While
解析：根据句意前后有转折的意思，而but后通常没有逗号。
本题选A。
{02}The reason ________ he was late was ________ his mother suddenly fell ill．
A.why; because
B.which; why
C.why; that
D.how; that
解析：
本题选C。