As the roles of people in society change, so does the rules of conduct in certain situations.
A.As the roles
B.so does
C.rules of 
D.situations

He couldn’t rest or sleep because ____ too much coffee. 
A.drinking 
B.been drinking
C.had been drinking
D.he had been drinking

If orders keep coming in like this, I’ll have to ____ more staff. 
A. give up
B. add in
C.gain on
D.take on

Did you have an argument with Francis?” “If you had been there, you ____ the same.” 
A.did
B.would have done
C.had done
D.would be

You saved my life. I thank you from the ____ of my heart.
A.centre
B.bottom   
C.depths     
D. top

A.pioneer      
B. committee     
C.precision     
D.gorilla

A.Christianity           
B.centenarian   
C.eradicated      
D.economic

A.non-existent  
B.none 
C.nonsense 
D.gross

A.fasten 
B.often    
C.digest           
D. castle

A.canoeing 
B.career  
C. canal     
D. caring