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

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
It’s a shame that these two plans are ____ exclusive. Implementing one will automatically rule out the other
A.exhaustively
B.imperceptibly
C.mutually
D.respectively

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.an investigation
B.a control
C.a revision
D.a check up

Choose the answer among A, B, C, D to complete each of the sentences below:
You can drive my car _______ you drive carefully.
A.because
B.as long as
C.although
D.unless

Choose the answer among A, B, C, D to complete each of the sentences below:
Among the problems facing the national park's manager, the most serious ones are those of ______ and expansion.
A.reassessment
B.distinction
C.maintenance
D.improvement

Choose the answer among A, B, C, D to complete each of the sentences below:
When ________ a European, we should stick to the last name unless he suggests that we use his first name.
A.(2) discussing
B.(1) speaking
C.(3) talking
D.(4) addressing

Choose the answer among A, B, C, D to complete each of the sentences below:
It was found that he lacked the ________ to pursue a difficult task to the very end.
A.obligation
B.persuasion
C.commitment
D.engagement

Choose the answer among A, B, C, D to complete each of the sentences below:
The mother ________ her little son. She gives him whatever he wants.
A.harms
B.damages
C.ruins
D.spoils

Choose the answer among A, B, C, D to complete each of the sentences below:
The new law allows school districts to spend more money on less ______ children.
A.advantageous
B.advantaged
C.disadvantageous
D.disadvantaged

Choose the answer among A, B, C, D to complete each of the sentences below:
We didn’t ________ to the station in time to catch the train
A.reach
B.make
C.arrive
D.get