2.The rivers must be kept clean.(改为一般疑冋句)

 the rivers clean?

1.Students can be allowed to choose their own clothes.(改为否定句) 

Students   to choose their own clothes.

5.These books to the library on time.

  A. should are returned   B. should be returned

  C. should returned       D. should return

4.People who drink wine to drive after May Day.

   A. don't allow      B. isn’t allowed

   C. mustn’t allow   D. mustn’t be allowed

3.(2011 四川成都中考) Because of the support from all over the country,beautiful new buildings here and there in the earthquakehit areas in Sichuan.

  A. can see   B. can be seen   C. will be seen

2.( 2015广东深圳莲花中学期中) 一Which team did you last night?

 —The Red Team. Our Blue Team many times during the match and they failed.

 A.play against;scored 

 B.play for;won 

 C.act out;played

1.(2015广东深圳南山北师大附中期中) 一These clothes are dirty. They today.

 —OK,I will do it.

A. would be washed;all the time

B. should be washed;at once

C. would be washed;at once

D. should wash;all the time

10.The children (should provide) with money and clothing.

9.All the chairs in the park (paint) black last month.

8.Two new schools| ( set) up in my hometown next year.