The professor told me to start the research right now, ________ I was sure to fall behind.
| A．or | B．so | C．but | D．and |
The little boy was found in his room the next day.
| A．dead | B．die | C．death | D．died |
Your brother be hungry now.-----he had lunch only two hours ago!
| A．wouldn’t | B．can’t | C．mustn’t | D．needn’t |
AIDS is said the biggest health to people in that area over the past few years.
| A．that is | B．to be | C．that it has been | D．to have been |
With a lot of problems ________, the newly – elected headmaster is having a hard time.
| A．settled | B．settling | C．to settle | D．being settled |
Soon after getting off his horse, the man appeared at the second storey windows, __he could see nothing but trees.
| A．from which | B．from where | C．in where | D．which |