The young man always talks a lot ___________ he knew everything, which, of course, makes others unhappy.
| A．once | B．even though | C．though | D．as though |
.Fifty-two miners were killed in the accident. ______ , thirty-six were missing.
| A．In addition | B．On the other hand | C．On this occasion | D．In brief |
You have been sitting on my hat and now it is badly out of ________.
| A．order | B．shape | C．balance | D．date |
She often helps the students _____ she thinks are not good at English.
| A．whom | B．which | C．who | D．when |
You find it so hard to write the composition now if you had observed life carefully
| A．wouldn't | B．didn't | C．don't | D．mustn't |
Plastic bags won’t be allowed to be used for free in the supermarkets. They can’t _________ easily, which does great harm to our environment.
| A．break off | B．break in | C．break down | D．break out |