The use of computers aids in teaching,__________ the role of teachers is still veryimportant.

A. have completed                       

B. had completed

C. will have completed                    

D. would have completed

A. truth.               

B. facts                

C. things               

D. information

A. has tried / was given                             

B. have tried / were given

C. has tried / were given                             

D. have tried / was given

A. I will, first thing in the morning.            

B. I can get a paper for you.

C. I'm not sure.                                           

D. I'm with you there.

A. won’t look                

B. wouldn’t look           

C. wouldn’t have looked         

D. looked

A. just                            

B. nutritious                  

C. quick                

D. convenient

A. Yes, I am.                  

B. I'll never change my mind. 

C. Have I?

D. Oh, sorry,I can't.