—What do I have to do ______ I want to be thinner?—Eat less, exercise more.
A: How many students can you see in the reading room? B: _______________.
I am afraid there’s ____________with the computer. Can you come and have a look?
What does Mr. Liu usually ___________when he is at school?
It’s not my blouse. It may be _______________.
Which of the following can NOT be used as subject?