She had golden hair when she was a child, but( ) she got older and older, her hair went darker and darker. ( 章节：7 难度：3)_做题室

单项选择题She had golden hair when she was a child, but( ) she got older and older, her hair went darker and darker. ( 章节：7 难度：3): A、while; B、when; C、after; D、as

正确答案：D
答案解析：
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