Choose the best answer for the following sentence:
“Can I help you?”
“Yes, I’m interested ___________ buying a pair of boots.” 
A. in 
B. on  
C. for  
D. by

Choose the best answer for the following sentence:
The fiscal budget, totaling 83,061.3 billion yen, which is designed to boost regional economies and narrow gaps between major cities and the countryside, will be ____________ in time for the start of the new fiscal year in Japan on Tuesday.  
A. failed                 
B. enacted                 
C. vetoed                  
D. decoded

Đạo hàm của hàm số y=-2x7+x là 
A. y'=-14x6+2x.
B. y'=-14x6+2x.
C. y'=-14x6+12x.
D. Một kết quả khác.

Hàm số y=12cotx2 có đạo hàm là:
A. y'=-xsin2x2.
B. y'=-x2sinx2.
C. y'=-xsinx2.
D. y'=-xsin2x2.

Choose the best answer for the following sentence:
The candidate was successful because everybody believed in his promise of free _____________ for them. 
A. health centre                   
B. health care
C. health fare                 
D. health providing

Choose the best answer for the following sentence:
He was ashamed of the poor food which ______________ the dinner at which he begged her to join them. 
A. consisted                    
B. occupied                     
C. comprised                    
D. contained

Choose the best answer for the following sentence:
An animal perfectly in ____________ with its environment is a perfect mechanism.
A. harmony                    
B. sympathy                   
C. discord                 
D. balance

Choose the best answer for the following sentence:
_____________ the fact that it was raining, he went for a walk.
A. Although 
B. Even though 
C. Despite 
D. In spite

Choose the best answer for the following sentence:
The professor interceded _________ the authorities on my behalf 
A. at  
B. on
C. with
D. for

Tìm khẳng định đúng trong các khẳng định sau:
 liên tục trên .
 có giới hạn khi 
 liên tục trên đoạn .
A. Chỉ và  
B. Chỉ và  
C. Chỉ  
D. Chỉ