Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Before becoming successful, Charles Kettering, former vice president of General Motors, was so poor that he has to use the hayloft of a barn as a laboratory.
A.successful               
B.so poor      
C.has to        
D.as

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the primary stress in each of the following questions.

A.invention       
B.manager      
C.company                 
D.attitude

According to the passage, the industry is likely to be thought as _______.
A.the only source of pollution         
B.the utmost harmful activity
C.a danger to the environment                    
D.a threat to human health

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
It would be more economic to buy the bigger size.
A.It        
B.be    
C.bigger size     
D.economic

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A.failed    
B.performed               
C.delivered                
D.finished

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each of the pair of sentences in the following questions.
The cowboy fell off his horse. He was wounded by an arrow.
A.The cowboy wounding by an arrow fell off his horse.
B.The cowboy fell off his house who wounded by an arrow.
C.The cowboy wounded by an arrow fell off his horse.
D.The cowboy who wounded by an arrow fell off his horse.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Thick fog in Hanoi prevented truck drivers ________ driving safely at night.
A.to     
B.from                              
C.about                             
D.with

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
After graduation, she found ________ with a local travel company in Chicago.
A.career                            
B.workplace                     
C.employment                  
D.service

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Fossil fuels still widely used ________ they cause much pollution to our environment.
A.because                         
B.in spite of  
C.since                              
D.even though

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Air pollution, together with littering, are causing many problems in our large, industrial cities today.
A.with                        
B.industrial                            
C.problems                             
D.are