Choose the correct sentence which is built from the words and phrases given:
Sea turtles / play / important roles / the ecosystems / the oceans / beaches//.
A. Sea turtles play importar.i roles for the ecosystems in the oceans and beaches.
B. Sea turtles play important roles in the ecosystems in the oceans and beaches.
C. Sea turtles play important roles of the ecosystems in the oceans and beaches.
D. Sea turtles play important roles with the ecosystems in the oceans and beaches.

Find a mistake in the four underlined parts of the sentence and correct it:
My sister is looking for a new job because her present one is very bored.
A. is looking for
B. because
C. her present one
D. bored

Find a mistake in the four underlined parts of the sentence and correct it:
Here's the computer program about that I told you.
A. the
B. about that
C. I
D. told you

Choose the best answer for the following sentence:
It is impossible _________ water with oil.
A. to mix 
B. mix 
C. mixing 
D. mixed

Choose the best answer for the following sentence:
Nowadays, more and more young people want to have a university _________ .
A. educate 
B. education 
C. educator  
D. educational

Choose the best answer for the following sentence:
He asked me __________.
A. since when I am writing            
B.  since when I waited
C. how long I have been waiting             
D. how long I had been waiting

Find a mistake in the four underlined parts of the sentence and correct it:
The students were interested in take a field trip to the National Museum, but they were not able to raise enough money.
A. were
B. in take
C. they
D. enough money

Choose the word that has the underlined part pronounced differently from the rest:
theatre                        there                       anything                      three
A. theatre                        
B. there                       
C. anything                      
D. three

Choose the word that has the underlined part pronounced differently from the rest:
actual                               individual                            careful                          casual
A. actual                               
B. individual                            
C. careful                          
D. casual

Choose the correct sentence which is built from the words and phrases given:
Now / I would like / have a refund / change for a better one.
A. Now, I would like to have a refund or change for a better one.
B. Now, I would like to have a refund and to change for a better one.
C. Now, I would like to have a refund or changing for a better one.
D. Now, I would like to have a refund as well as change for a better one.