Is your shirt old________ new?
[     ]
A. but    
B. and      
C. or    
D. too
— Where is Leo? He said he would come tonight.
— Yes, he did say so, _____ we can't find him now.
[     ]
A. and
B. so
C. but
D. or
We speak a lot of English ________ in class ________ outside class. 
[     ]
A. both; and
B. both; as well as
C. as well; and
D. as well; as well as