（ ）11. After a long discussion， the workers have finally the decision that they should hold on their strike for two more days.

A. received

B. found

C. explained 

D. reached

（ ）12. Next weekend he will visit the airbase he worked 25 years ago.

A.when

B.as

C.where 

D.which

（ ）13. The sports team of our province won they did at the last National Games.

A. twice as many gold medals as 

B. as many twice gold medals as

C. as many as twice gold medals 

D. twice many gold medals than

（ ）14.Let's go out for a walk along the river ban

A. What a fine day

B. What fine day

C. How fine day

D. How a fine day

（ ）15. It remains a question when the new classroom building

A. will be completed

B. had been completed

C. would be completed

D. has been completed

（ ）16. While we boys were working hard in the garden， our sisters themselves in the sitting room.

A. had enjoyed

B. enjoy

C. were enjoying

D. would enjoy

（ ）17. The pressure on the object in the water changes with the depth，the further down you go ， the greater the pressure is.

A. In other words 

B. In another word

C. By the way 

D. In a way

（ ）18. The Yangtze is the longest river in China which some more bridges have been built in the past few years.

A. onto

B. through

C. above 

D. over

（ ）19. My mother knows Jane； they to each other at a party.

A. have been introduced

B. are introduced

C. were introduced 

D. had been introduced

（ ）20. I'm sure he understands you feel. He's very clever.

A.when

B.what 

C.whether

D.how