Choose the best answer for the following sentence:
If you ___________ time, please write to me. 
A. have            
B. had               
C. have had          
D. has

Choose the best answer for the following sentence:
She told me that she'd rather ___________ on the committee. 
A. not to serve                   
B. not serving
C. not serve                 
D. serving not

Choose the best answer for the following sentence:
He always prevents me _________ doing my duty.
A. of                
B. from             
C. with                  
D. against

Choose the best answer for the following sentence:
''When _____________?''
“In 1928.” 
A. penicillin was invented                     
B. did penicillin invented
C. was penicillin invented                
D. did penicillin invent

Choose the best answer for the following sentence:
______________ weapons have made more contribution to poaching and killing wild animals. 
A. Huge                 
B. Light                    
C. Advanced                  
D. Commercial

Choose the best answer for the following sentence:
Studying abroad can be very different form studying in your country. For example, in most schools in the UK, ______________ sport is encouraged.
A. join in
B. participation in
C. getting on
D. joining

Choose the best answer for the following sentence:
Thanks to the advances in _____________ research, people now live a better and longer life. 
A. science              
B. scientific                    
C. scientist               
D. scientifically

Choose the best answer for the following sentence:
“Do you think it'll snow much longer?”
“It _________ to end soon.” 
A. may               
B. should                
C. is going               
D. have

Choose the best answer for the following sentence:
''Where does Anthony work?”
“I think he’s associated _____________ the Forman Company.''
A. with                
B. by  
C. of  
D. to

Choose the best answer for the following sentence:
I _________ understand this letter. Will you translate it for me? 
A. mustn’t  
B. may not  
C. can’t            
D. shouldn’t