Accidents are still the number one cause of ______ death for Americans.
A. previous
B. preserve
C. premature
D. preferable
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He lent money, made donations and encouraged others to do ______.
A. likewise
B. likely
C. like
D. alikely
It is necessary that he ______ out the information for my reference.
A. sorts
B. sorting
C. must sort
D. sort
It is essential that laws and regulations ______ worked out and enforced toprotect water resources.
A. are
B. be
C. being
D. been
______, due to unforeseen circumstances, this year's show has been cancelled.
A. Unfortunately
B. Undoubted
C. Fortunately
D. Obvious