—Can you keep the secret?
—You ________ worry — I'm not going to mention it to anyone.
| A．needn't | B．couldn't |
| C．mustn't | D．won't |
I’ve promised to attend your party and I’ll ______ my word.
| A．hold | B．keep | C．follow | D．take |
The classroom is so dirty. _________ we clean it?
| A．shall | B．Will | C．Would | D．Do |
Was it in the village___ we used to live in____ the accident happened ?
| A．where, that | B．which, that | C．that, where | D．where, which |
Over the past decades, sea ice _____ in the Arctic as a result of global warming.
| A．had decreased | B．decreased | C．has been decreasing | D．is decreasing |
After some time in the dark cave, our eyes slowly _____ the dark.
| A．used to | B．adapted to | C．accustomed to | D．helped to |