The students often finish their work .
| A．as told | B．as are told | C．as telling | D．as tell |
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 |
Jane’s grandmother had wanted to write children’s book for many years, but one thing or another always got in way.
| A．a;不填 | B．the;the |
| C．不填;the | D．a;the |