单项选择题James Watt()the steam engine.

 A.was inventing  
B.invented  
C.had invented  
D.has invented


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1.单项选择题It is()to interrupt the others while they are talking.

A.rough 
B.rude 
C.polite 
D.troublesome

2.单项选择题It was well known that Thomas Edison()the electric lamp.

A.invented 
B.discovered
C.found
D.developed

3.单项选择题It was in()the American astronauts succeeded in landing on the moon.

A.when
B.the moment 
C.which 
D.that

4.单项选择题It was a great pleasure()me to be invited to the party.

A.for 
B.on 
C.to 
D.of

5.单项选择题It is not always easy to tell the right()the wrong.

A.from 
B.with
C.than 
D.to

6.单项选择题It is not always easy to tell the right()the wrong.

A.from  
B.with  
C.than  
D.to

7.单项选择题It is high time we()something to stop road accidents.

A.did 
B.are doing 
C.will do 
D.do

8.单项选择题It is high time that we()working to take a break.

A.should stop   
B.would stop   
C.stopped   
D.stop

9.单项选择题It is believed that if a book is(),it will surely()the reader.

A.interested… interest 
B.interesting… be interested  
C.interested… be interesting  
D.interesting… interest

10.单项选择题It is()for people to feel excited when they start doing something new.

A.normal
B.ordinary
C.average
D.regular