─ Look, Stella is there!
─ That ______ be her. She doesn’t like singing.
| A．mustn’t | B．can’t | C．needn’t | D．won’t |
Man’s understanding of nature is developing ________. It never stays at the same level.
| A．at the right time | B．for the first time |
| C．from time to time | D．all the time |
______ you are middle school students, you should learn to how to look after yourselves.
| A．Though | B．While | C．Since | D．Unless |
---What do you think of ____ talent show in our school? ---I should say it was ___ great success.
| A．/; a | B．a; the | C．the; / | D．the; a |
Which sign tells us the way out of a building?
| A．ENTRANCE | B．PUSH | C．EXIT | D．PULL |
—__________ move it is!
—Yes! I have seen it twice.
| A．What an interesting | B．What interesting an |
| C．How interesting a | D．How an interesting |