---Look. The man at the gate _____ be our headmaster. He is always standing there every morning.
---No. it ____ be him. He is having a meeting in the office now.
| A．must; can’t | B．must; mustn’t |
| C．can’t; can’t | D．can’t; mustn’t |
— Miss Gao is very popular with her students.
— Yes. Her classes are _______ lively and interesting.
| A．always | B．seldom |
| C．sometimes | D．never |
It is reported that people throw _______ plastic bags along this street every day.
| A．hundred | B．hundreds |
| C．hundreds of | D．hundred of |
During the earthquake, many buildings fell down . _______the people there didn’t give up hope.
| A．And | B．So | C．Or | D．But |
_______ the age of 13, Fu Mingxia was very famous in China _______ the youngest Olympic champion.
| A．At; for | B．At; as |
| C．On; for | D．In; as |
Our classroom is as big as _______.
| A． they | B．their |
| C．theirs | D．them |