I don’t think students who volunteer in high school will continue to volunteer throughout their lives, _______? 

A. Had I made two minor mistakes, I would have got full marks for the test

B. If I didn’t make these two minor mistakes, I would have got full mark for the test

C. If the mistakes hadn’t been minor, I could have got full marks for the test

D. I would have got full marks for the test if there hadn’t been these two minor mistakes

A. the worse the situation seems 

B. the worse seem the situation 

C. the situation seems worse 

D. the situation seems the worse 

A. Sharks rarely attack people because many people are afraid of them

B. Rarely attacked by sharks, many people are, therefore, afraid of them

C. Many people are afraid of sharks because they are dangerous.

D. Although sharks rarely attack people, many people are afraid of them

A. objective 

B. positive 

C. negative 

D. middle 

A. don’t you understand 

B. will you understand 

C. you understand 

D. you will understand 

A. Using economical 

B. Used economically 

C. Used economical 

D. Using economically