She is a wellknown doctor now, but she ________ as a cleaner at the hospital for five years.
| A．has worked | B．worked |
| C．had worked | D．works |
—What’s up? You look down. —I have piles of papers ________, but I type so slowly.
| A．to be typed | B．typed | C．to type | D．being typed |
We must apply what we have learned to our daily work because in no case _____ from practice.
| A．should theory separate | B．should theory be separated |
| C．theory should separate | D．theory should be separated |
Nowadays teachers tend to be more dependent on ________ is thought to be a great teaching aid—the computer.
| A．that | B．which | C．what | D．as |
________ from Milan Trenc’s novel, the film Night at the Museum brings to life a world where dinosaurs wander the earth.
| A．Adapted | B．Adapting | C．Having adapted | D．To be adapted |
Studying alone, you are free to choose what to learn and when, ________ you don’t need others’ agreement.
| A．while | B．if | C．though | D．as |