Find a mistake in the four underlined parts of the sentence and correct it:
What problems do population explosion cause to the world?
A. What
B. problems
C. do population explosion cause
D. to the world

Choose the word that has the underlined part pronounced differently from the rest: 
height                bright                   mind                weight
A. height               
B.  bright                   
C. mind                
D. weight

Choose the word that has the underlined part pronounced differently from the rest: 
chimney             child             line            sign
A. chimney             
B. child             
C. line           
D.  sign

Choose a word that has different stress pattern:
shoemaker              practical            generous              improvement
A. shoemaker              
B. practical            
C. generous              
D. improvement

Choose the best answer for the following sentence:
There ___________ mutual understanding between friends.
A. must be                
B. must to be                
C. must                  
D. be

Choose the best answer for the following sentence:
She stood in the mucky yard and hands plunged into the pockets of her ____________ coat. 
A. floppy                
B. soft                 
C. tough                
D. gentle

Choose one sentence that has the same meaning as the root one:
She said to us, ''Don’t be late again.'' 
A. She said to us not to be late again. 
B. She told us to be not late again.
C.  She told to us not to be late again. 
D. She told us not to be late again.

Choose a word that has different stress pattern:
statue              person                   suppose                 little
A. statue              
B. person                  
C.  suppose                
D.  little

Choose the best answer for the following sentence:
Only prositive comments are ______________ on the first days of the new year.
A. focused                   
B. occurred                
C. made                  
D. done

Choose the best answer for the following sentence:
How dare you ____________ my letter! 
A. to open   
B. open 
C. opens
D. opening