A. /, went
B. Because, went
C. Because, go
D. Because, goes

A. but          
B. and            
C. because      
D. also

A. and      
B. but      
C. so      
D. or

1. I haven't heard from him_______ he went to America.
2.He won't be here_______ he is invited.
3. He will not go to the cinema______ he is very busy.
4. We found the key_______ she had left it.
5. We found the books two days ______he had gone away.
6. We had no sooner got to the station ________the train left.
7. He speaks English ______ he were an Englishman.
8.He is explaining clearly______  they can understand.
9. Do not leave the room______ you have finished the test.
10. She sang______ she went along.

A. after      
B. when      
C. unless    
D. besides

1. Tom does well in English. (改为否定句)
    Tom _____  _____ well in English.
2. "Did you sleep well last night?" David asked me. (改为含宾语从句的复合句)
     David asked me _____ I _____ well last night.
3. It's five-fifty by my watch. (就画线部分提问)
    _____ the ____ by your watch?
4. John will go to bed after he finishes his homework. (改为同义句)
    John _____ go to bed _____ he finishes his homework.
5. Your father had lunch at school. (改为反意疑问句)
    Your father had lunch at school, _____  _____?

A. so
B. and
C. but

[     ]

A. when
B. because
C. though
D. if

A. what
B. when
C. which
D. why

A. Although    
B. Since
C. Even        
D. If