Children under 12 years of age in that country ________ be under adult supervision when in a public library.

A. must

B. may

C. can

D. need

According to a recent U.S. survey, children spend up to 25 hours a week ________ TV.

A. to watch

B. to watching

C. watching

D. watch

I had to buy ________ these books because I didn't know which one was the best.

A. both

B. none

C. neither

D. all

The accident is reported to have occurred ________ the first Sunday in February.

A. at

B. on

C. in

D. to

________ is reported in the newspapers, talks between the two countries are making progress.

A. It

B. As

C. That

D. What

We cannot figure out ________ quite a number of insects, birds, and animals are dying out.

A. that

B. as

C. why

D. when

There's ________ cooking oil left in the house. Would you go to the corner store and get ________

A. little; some

B. little; any

C. a little; some

D. a little; any

________ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.

A. To wait 

B. Have waited

C. Having waited

D. To have waited

The teacher, with 6 girls and 8 boys of her class, ________visiting a museum when the earthquake struck.

A. was

B. were

C. had been

D. would be

The mayor of Beijing says that all construction work for the Beijing Olympics ________ by 2008.

A. has been completed

B. has completed

C. will have been completed

D. will have completed