Don’t come into the lab ________ you are asked to.
| A．unless | B．until | C．because | D．since |
Tingting is _____ than Meimei, but Meimei is _____ than Tingting.
| A．tall; stronger | B．taller; strongest |
| C．tallest; strong | D．taller; stronger |
Kate often _____ her homework in the evening.
| A．do | B．doing | C．is doing | D．does |
I know that Manchester is a city in _____.
| A．Canada | B．the United States | C．England | D．Japan |
Dalian is _____the north of China.
| A．on | B．near | C．in | D．at |
Cambridge is _____ the River Cam.
| A．in | B．on | C．over | D．under |