Choose the answer among A, B, C, D to complete each of the sentences below:
The discovery was a major___for research workers.
A.breakdown
B.breakout
C.break-in
D.breakthrough

Choose the answer among A, B, C, D to complete each of the sentences below:
I shook hands and ______ a few words with the manager.
A.expressed
B.uttered
C.exchanged
D.converted

Choose the answer among A, B, C, D to complete each of the sentences below:
Many African and Asian nations have set aside land called _____ to protects the habitats of elephants and other wild animals.
A.species
B.reserves
C.forest
D.wildlife

Choose the answer among A, B, C, D to complete each of the sentences below:
I have looked through the report, but I must admit, only ___________.
A.thoroughly
B.seriously
C.superficially
D.carefully

Choose the answer among A, B, C, D to complete each of the sentences below:
They were among the first companies to exploit the ______ of the Internet.
A.potential
B.possibility
C.ability
D.prospect

Choose the answer among A, B, C, D to complete each of the sentences below:
The widened ___ will help keep traffic flowing during rush hours.
 
A.pathway
B.runway
C.entryway
D.freeway

Choose the answer among A, B, C, D to complete each of the sentences below:
As John ___ enjoyed doing research, he never could imagine himself pursuing other careers.
 
A.utterly
B.totally
C.extremely
D.thoroughly

Choose the answer among A, B, C, D to complete each of the sentences below:
We continue to...... rainforests and increase the dangers of global warming.
A.cut down
B.cut in
C.cut out
D.cut off

Choose the answer among A, B, C, D to complete each of the sentences below:
They were________ for smuggling jewelry into the country.
A.warned
B.arrested
C.accused
D.judged

Choose the answer among A, B, C, D to complete each of the sentences below:
It’s good idea to see your doctor regularly for ________.
A.a check up
B.a revision
C.an investigation
D.a control