Susan is above      in her lesson.

A. accurate         

B. average       

C. active             

D. actual

She used to be a        child, but she is now a good manager.

A. spot             

B. spoilt          

C. spare              

D. spoke

American science is constantly        improving the quality of products.

A. to work         

B. on work          

C. at work        

D. in work

It's commonly believed that only rich middle-aged business men suffer from

A. flu              

B. stomachache      

C. Gad cold      

D. stress

Money frozra“invisible” trade         the loss on “visible” trade.

A. expects         

B. expends            

C. exceeds      

D. exports