----- __________it be Li Ping who broke the glass?---- No. It __________ be Wu Dong who did it.
Be careful when you cross this busy street. _____, you may get run over by a car.
Smoking is so harmful to people’s health that it kills __________ people each year than automobile accidents.
I’ll come to pay a visit to you if _______ this weekend.
The student was ________ a gold cup for his excellent performance in the competition.
Tom ____ be ill, for I saw him playing basketball an hour ago.