According to the passage, how do weeds and grasses affect the soil?  
A.They add nutrients to it         
B.They speed seeds on it
C.They attract animal to it       
D.They make it cooler and wetter

Read the following passage carefully and answer the questions, from questions 47 to questions 50.
            Students working for their first degree at university are called undergraduates. Then they take their degree we say they graduate, and then they are called graduates. If they continue studying at university after they have graduated, they are called post-graduates. Full-time university students spend all their free time studying. They have no other employment. Their course usually lasts for three or four years. Medical students have to follow a course lasting for six or seven years. Then they graduate as doctors. In Britain, full-time university students have three terms of about ten weeks in each year. During these terms they go to lectures or they study by themselves. Many students become members of academic societies and sports clubs and take part in their activities. Between the university terms they have vacations (or holiday periods). Their vacations are long, but of course they can use them to study at home.
Between the university terms, students have their ______.
A.tests                                    
B.vacations                            
C.practice time                 
D.employment

Choose the best answer to complete each of the following sentences.
_____ is a family unit that consists of a father, a mother, and their children.
A.extended family  
B.nuclear family    
C.single-parent family      
D.big family

Choose the best answer to complete each of the following sentences.
The little girl divided the cake _____ three parts.
A.to                                        
B.into                                     
C.from                                   
D.with

Choose the best answer to complete each of the following sentences.
It isn’t very _____ to leave the lights on when you are not in the room.
A.economy                             
B.economic                            
C.economical                         
D.economized

After her mother died, she was  raised by her grandparents.

A.come into   
B.put up       
C.brought up      
D.grown up

Choose the best answer to complete each of the following sentences.
Could you wait for a few minutes until the manager _____ back?
A.will get       
B.gets                                     
C.is getting    
D.had got

Choose the best sentence that can be arranged from the words given.
our I will / school / if / access / much/ Internet / we / to / learn I the / better / has
A.If our school has access to the Internet, we will learn much better.
B.If we will learn much better, our school has access to the Internet.
C.If our school has much access, we will learn better to the Internet.
D.If we will learn better to the Internet, our school has much access.

II. Choose the word in each line that has different stress pattern.
 
casual                          B. convenient              C. designer                  D. embroider
A.casual                          
B.convenient              
C.designer                  
D.embroider

IV. Choose the underlined words or phrases that are not correct in standard written English.
When my brother went to (A) work in the city (B) library, he became (C) interesting (D) in books.
A.to
B.city 
C.became 
D.interesting