The professor spoke so fast that I found him.
| A．it hard following | B．it being hard to follow |
| C．hard to follow | D．it hard to follow |
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.
A．sitting, fixing |
B．to sit, fixed | C．seating, fixing | D．seated, fixed |
Tom joined a dancing group but didn’t seem to___________, so he left.
| A．show off | B．go up | C．fit in | D．come over |
The little boy was found__________in his room the next day.
| A．dead | B．die | C．death | D．died |
Your brothe__________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 |