单项选择题

For many middle-aged people, when it comes to ______ for retirement, they are not quite sure about how much money they should save and spend.

(A) prepare
(B) preparing
(C) prepared
(D) prepares
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单项选择题
All the staff members ______ an opportunity to express their opinions about the design of the new factory before construction begins.
(A) had
(B) would have had
(C) have had
(D) will have
单项选择题
Without the devotion and cooperation of this great team, I can tell you for sure that the project would never ______ completed last week.
(A) be
(B) have been
(C) been
(D) had been
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