Find a mistake in the four underlined parts of the sentence and correct it:
A United Nations tried to solve some global environmental problems.
A. A
B. to solve
C. some
D. global environmental problems

Choose a word that has different stress pattern:
environment                            diversity                         establishment                           invitation
A. environment                            
B. diversity                         
C. establishment                           
D. invitation

Choose the word that has the underlined part pronounced differently from the rest:
through                        house                         bound                            announce
A. through                        
B. house                         
C. bound                            
D. announce

Choose the correct sentence which is built from the words and phrases given:
I / also / invite / some / classmates.
A. I have also been invited some of our classmates.
B. I have also invited some of whom are our classmates.
C. I have also invited some of that are our classmates.
D. I have also invited some of our classmates.

Find a mistake in the four underlined parts of the sentence and correct it:
Although Ha Tay province has been merged into the metropolitan area of Hanoi, but many people are still worried.
A. merged into
B. metropolitan area of
C. but
D. are still worried

Choose the word that has the underlined part pronounced differently from the rest: 
circle                        fire                       hire                        tire
A. circle                        
B. fire                       
C. hire                        
D. tire

Choose a word that has different stress pattern:
semester                    admire                   physical                   disabled
A. semester      
B. admire       
C. physical      
D.  disabled

Find a mistake in the four underlined parts of the sentence and correct it:
One of the world's best-selling authors, Louis L'Amour is told to have written 101 books, mostly westerns.
A. the world's
B. told
C. written
D. mostly

Choose the best answer for the following sentence:
The firm’s directors chose Emma ______________ the new production manager. 
A. be               
B. to be
C. is
D. was

Find a mistake in the four underlined parts of the sentence and correct it:
You should eat less and do more exercises if you want to be overweight.
A. should
B. exercises
C. if
D. want to be