(2013·高考天津卷)It was not until near the end of the letter she mentioned her own plan.
A. that
B. where
C. why
D. when
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(答案→)A. that
B. where
C. why
D. when
解析：选A。本题考查强调句型：It is/was＋被强调部分＋that＋其他部分。句意为“直到快写到信的结尾的时候，她才提到了自己的计划”。句中被强调的部分是时间状语not until near the end of the letter。