Swimming alone ____ be ____ dangerous. Do be careful.

　 A. need, highly　　 B. may, high　　 C. can; highly　 D. can; high

Our teachers often tell us, “the harder you study, the more questions you will think of 　　　　 ．”

A．a(chǎn)sking　　 　　 B．to ask　　　　 　　　　　　　 C．being asked　 D．to be asked

Mrs White found her husband surrounded by letters and papers and________ very worried.
　　A. to look　　　B. looked

C. looks　　　 D. looking

Before he had no chance __________.

　 A. to go to school B. to go school　 C. going to school　　 D. to go to the school

It took the workers all day to __________(運(yùn)輸，運(yùn)送）the goods to our company.

The drinking water in the village is heavily polluted by the chemical works nearby. And ____ with fresh and clean water, the locals appeal to the media.

A. supplied 　 　　　 B. to be supplied 　 　 C. supplying 　　　 D. being supplied

Residents ________ not to go out alone or to take part in any groups during the period of recent terrorist activities.

A. were always being warned　　　　　　　　　 　 B. are always warning

C. always warned　　　　　　　　　　　　　　 　 D. had always been warned

“What place is it?” “Haven’t you found out we _____ back where we ______?”

A. were, had been　　　　　 B. have been, are

C. are, were　　　　　　　　 D. are, had been

When you walk around the buildings , streets and parks, you will find them ______________________（設(shè)計(jì)成不同風(fēng)格）. (style)