At night, we can see colorful lights on both ______ of the streets.
A. sides B. side C. side’s
You are too late. The film ______ since half an hour ago.
A. has begun B. has been on C. began
Do you know ______ Guangzhou tomorrow?
A. whether they leave for B. whether will they leave for
C. whether they are leaving for
----- Your classroom is very clean.
----- Yes, it ______ every day.
A. is cleaned B. cleans C. is cleaning
The students in Class Two played basketball against Class One yesterday, ______?
A. did they B. didn’t they C. weren’t they
Do you think which language is ______, Japanese or English?
A. difficult B. the most difficult C. more difficult