The socks are so ______ that they can't be mended any more.

A．used up B．worn out

C．tired out D．broken out

Nearly all the villagers _________(餓死) to death during the long drought.

After the new technology was introduced, the factory produced _____ tractors in 1998 as the year before.

A. as twice many 　 B. as many twice

C. twice as many 　 D. twice many as

A large group people who play various musical instruments together led by a conductor is called an ______（管弦樂隊(duì)）.

Their search led to some really strange thing ________ a protein never before seen in the blood of a fish.

A．making up of　　 B．made up of　

C．consisted of　　 D．being consisted of

―Tommy is planning to buy a car.（ ）

―I know. By next month, he _____ enough for a used one.

A. saves　　 B. saved　　　 C. will save　　　 D. will have saved

The typewriter _______ all week.

　 A. laying on the table, were it had laid 　

B. lying on the table, were it had laid

　 C. laying on the table, were it had laid 　

D. lying on the table had been laid

Although the teacher did not mention any names，everybody knew who he was ________.