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

A. and                
B. or                  
C. but

A. or                
B. and                
C. but

A. What                
B.Because               
C.When

A. then              
B. and                  
C. than

A. than                  
B. then                
C. the

A.and                  
B.than                    
C.but

用so连接两个句子。

1. I got up at nine o'clock this morning. I was late for my class.
    __________________________________________________
2. I was ill yesterday. I went to hospital.
    __________________________________________________

用then连接两个句子。

3. I put on my clothes.  1 washed my face.
    __________________________________________________
4. I read English.I studied Chinese.
    __________________________________________________

A. so            
B. because           
C. but

A. or          
B. and      
C. but