It was not until he arrived at the station__he realized he had f

It was not until he arrived at the station__he realized he had forgotten his ticket.
A、there
B、then
C、that
D、where
【正确答案】：C
【题目解析】：在这个句子“It was not until he arrived at the station____he realized he had forgotten his ticket.”中，我们面临的是一个强调句型的识别问题。强调句型的基本结构是“It is/was + 被强调部分 + that/who（当强调人时） + 其他部分”。 首先，我们识别出句子的被强调部分是“not until he arrived at the station”，这是一个时间状语，强调的是时间上的“直到他到达车站”。 然后，我们根据强调句型的结构，知道需要在被强调部分和句子的其他部分之间加上“that”来构成完整的强调句。 现在，我们逐一分析选项： A. there - “there”通常用作副词，表示存在或位置，在此处不适用。 B. then - “then”是副词，用于表示时间顺序，也不符合此处的语法要求。 C. that - “that”在此处作为强调句型的引导词，符合语法和句意。 D. where - “where”是关系副词，通常用于引导定语从句，描述地点，与本题无关。 因此，根据强调句型的结构和语法要求，正确的答案是C。完整的句子是：“It was not until he arrived at the station that he realized he had forgotten his ticket.”意思是“直到他到达车站，他才意识到他忘了带票。”