Tom was about to close the window     his attention was caught by a bird.
#92304
A
when   
B
if
C
and   
D
till
推荐题目
We all think that he is stronger _____. 
#94005
A
than he is looked
B
than he looks like
C
than he looks
D
than he looked like
It is the second time that I____ in Beijing 
#92034
A
am
B
was
C
have been
D
had been