Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The plan was ______ developed by a team of experts.
A.systemize
B.systematical
C.systematically
D.system

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
A species that faces___________ may become severely endangered or even extinct.
A. overbalance
B. overgrowth
C. overexploitation
D.overpopulation

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
What I like best of him is his __________ .
A.dependable
B.dependence
C.independence
D.dependency

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
There should be an international law against _______.
A.forestry
B.afforestation
C.reforestation
D.deforestation

Choose the right answer: In order to invest in _____ areas of new technology, the company has decided to liquidate many of its lesser assets.
A.promising
B.to promise
C.promised
D.promises

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Travelling to ______ countries in the world enables me to learn many interesting things.
A.differently
B.differ
C.different
D.difference

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
She is extremely competent and _________.
A.industrial
B.industrialize
C.industry
D.industrious

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The _______ north we go, the less likely we are to meet high temperatures.
A.farthest
B.farther
C.further
D.far

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Don’t worry. He’ll do the job as _______ as possible.
A.economic
B.economically
C.uneconomically
D.economizing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Water volume in rivers in central Vietnam will decline by 30 to 50 percent, potentially leading to a _______ between April and June.
A.scarcity
B.scarce
C.scarcely
D.scarify