Xinjiang is one of the areas sandstorms happen most often, results from a dry climate, vast desert and a strong wind.
| A．where; which | B．when; that | C．where, that | D．that; which |
—Jim, can you work this Sunday?
—________? I’ve been working for two weeks on end.
| A．Why me | B．Why not |
| C．What if | D．So what |
We need to get to the root of the problem______ we can solve it.
| A．while | B．after | C．before | D．as |
Albert Einstein was born in 1879. As a child, few people guessed that he a famous scientist whose theories would change the world.
| A．has been | B．had been |
| C．was going to be | D．was |
The books on the desk, covers are shiny, are prizes for us.
| A．which | B．what | C．whose | D．that |
You _____be careful with the camera. It costs!
| A．must | B．may | C．can | D．will |