单项选择题

Payment must be made in advance as we do not accept payment ______ delivery when popular items are ordered.

(A) to
(B) within
(C) upon
(D) following
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单项选择题
Fully equipped ______ cutting-edge features, the super car will exceed any speed record reached so far.
(A) for
(B) inside
(C) by
(D) with
单项选择题
So as to ______ the existing employee% we should make every effort to satisfy our internal customers with appropriate benefits.
(A) turn up
(B) retain
(C) apprehend
(D) accost
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