单项选择题

PhD programs are demanding, and fewer than half the students who set out to earn a doctorate actually ______ one.

(A) attain
(B) affirm
(C) applaud
(D) affix
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单项选择题
For over 30 years, Belinda Davis has demonstrated her passionate ______ to this community, and she deserves to be elected its mayor.
(A) commitment
(B) communication
(C) committee
(D) commission
单项选择题
It is the belief of the board that implementation of the new software protocols will not be finished this month, ______ even by next month.
(A) mostly
(B) ever
(C) nearly
(D) or
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