The need for water and soil conservation was recognized during the latter part of the last century, and has been ___ developed in the American continent.
A. excessively
B. exceedingly
C. extensively
D. exclusively
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The ___ of the whole operation has been jeopardized by one careless resident doctor who left a piece of gauze in the patient’s body.
A. safety
B. security
C. insecurity
D. protection
After being defamed online, the actress tried to ___ by drinking poison.
A. make for
B. make off
C. move out
D. move off
Night follows day as a ___ of natural laws.
A. substitution
B. requirement
C. supplement
D. necessity
Believers are ___ under the belief that there are immortal spirits protecting them.
A. implicitly
B. firm
C. certain
D. firmly