Một lớp học có 40 học sinh gồm 25 nam và 15 nữ. Chọn 3 học sinh tham gia vệ sinh công cộng toàn trường, hỏi có số cách chọn 3 học sinh trong lớp là
A. 9880.
B. 59280.
C. 2300.
D. 455.

Choose the best answer for the following sentence:
The detective started his work by drawing a map showing the precise ______________ of the accident. 
A. spot               
B. view                    
C. standpoint                 
D. location

Choose the best answer for the following sentence:
After you finish your work, you __________________ a break. 
A. should take                
B. have taken 
C. might have taken                   
D. takes

Choose the best answer for the following sentence:
We can’t even walk in the storm. Let’s wait in the hallway where we’ll be ____________ the strong winds until things quiet down.  
A. protected from            
B. protected by               
C. protecting from               
D. protecting by

Choose the best answer for the following sentence:
______________, but we didn't believe him.
A. Tom denied breaking the plate
B. Tom has denied he broke the plate
C. Tom had denied to break the plate
D. Tom would denied he has broken the plate

Choose the best answer for the following sentence:
If you had tried your best, you __________ the job.
A. would have got                 
B. got                    
C. will get                 
D. had got

Choose the best answer for the following sentence:
Although it was snowy very hard, ____________.
A. but he went out to buy some bread
B. he went out to buy some bread
C. however he went out to buy some bread 
D. he went out to buy some bread yet

Choose the word that has the underlined part pronounced differently from the rest: 
coach                 chore                  chorus                 check
A. coach                 
B. chore                  
C. chorus                 
D. check

Choose the best answer for the following sentence:
He stopped ____________ Park Avenue. 
A. by 
B. at  
C. in  
D. on

Choose the best answer for the following sentence:
"I didn’t go to class last night because my car broke down.” “You ____________ mine. I wasn’t using it.”
A. could borrow 
B. could have borrowed
C. may have borrowed  
D. may borrow