2019年mpacc考试英语真题——连词344

{01}Tom was about to close the window _____ his attention was caught by a bird.
A.when
B.if
C.and
D.till
解析：
本题选A。

{02I thought we"d be late for the concert, _____ we ended up getting there ahead of time.
A.but
B.or
C.so
D.for
解析：
本题选A。