---How did the accident happen? ---You know, it ________difficult to see the road clearly because it_________. 
#38358
A
was; was raining
B
is; has rained
C
is; is raining
D
will be; will rain
推荐题目
While the alien ________ the museum, the boy called the TV station.
#37872
A
visiting
B
was visiting
C
visited
D
visit
--- Is there anything special in the newspaper today?--- Yes. People who drink wine ___ to drive after May Day.
#39876
A
don’t allow
B
isn’t allowed
C
mustn’t allow
D
mustn’t be allowed
When it rains, she ______ a bus to work.
#39682
A
is taking
B
taking
C
takes
D
to take