— Hey, man. You can’t cross the street now. you have to wait ____ the traffic lights turn green.
— Oh, sorry and thank you.
| A．when | B．after | C．while | D．until |
–How well she sings!
---Yes, she has a very sweet ____________.
| A．voice | B．sound | C．noise | D．mouth |
–What should I do, doctor?
--________ healthy, you should take more exercise.
| A．Keep | B．Keeping | C．To keep | D． Kept |
Those two boys are twins, _______, they look very different.
| A．except | B．but | C．however | D．because |
— May I take the magazine out of the reading room?
— No, you can’t. You ______ read it here. It’s the rule.
| A．must | B．would | C．may | D．might |
The West lake is so beautiful. I want to stay in Hangzhou for _______ two days.
| A．more | B．other | C．another | D．else |