The reason () more street lights are being fixed is that people feel safer in well-lit streets. ( 章节：1 难度：3)
- A、that
- B、why
- C、which
- D、when
正确答案:B
答案解析:有
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The reason () more street lights are being fixed is that people feel safer in well-lit streets. ( 章节：1 难度：3)
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