--- ________ David be the new chairperson of the Students’ Union?
--- He _______ be, but I’m not sure.
| A．Can; can’t | B．Can; may |
| C．May; must | D．May; mustn’t |
— Nancy, would you mind turning down the music? Your father is sleeping.
—________.
| A．Yes, please |
| B．Sorry. I’ll do it right away |
| C．Sorry. I won’t do it again |
| D．Yes. I never do it again |
I really don’t know ___________.
| A．how they’ve got so angry with me. |
| B．why have they got so angry with me. |
| C．how have they got so angry with me. |
| D．why they’ve got so angry with me. |
—What should I do, doctor? —______healthy, you should take more exercise.
| A．To keep | B．Keep | C．Keeping | D．Kept |
I will stay with you the doctor comes to help you.
| A．after | B．if | C．unless | D．until |
Nowadays of business letters are written in English.？
| A．two-third | B．two-thirds | C．two-three | D．two-threes |