To study a number of subjects in the humanities has been both enjoyable and _______ , providing me with a new and different perspective on the world in which we live.
A. enlightened
B. enlightening
C. protested
D. protesting
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People are concerned about the environment issue because air and water pollution not only affects everyone's health but also makes it difficult for businesses to __________ .
A. profit
B. profile
C. profess
D. prefer
Instead of ignoring or envying successful students, I made it my mission to ________ the mysterious causes of their success and greatness.
A. prune
B. raid
C. investigate
D. delegate
Though he was 80 years old, blind and hardly able to walk, his family ________ him so much that they could hardly bear the thought of his death.
A. was attached in
B. was attached to
C. was featured in
D. was featured to
The support our volunteers provide to the community as well as society cannot __________ purely practical terms, and their continuing contribution is vital.
A. be imposed on
B. profit from
C. make an effort for
D. be measured in