神马作文网选择题(It +be+some time+before 从句
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I’m sorry you have been waiting so long, but it'll still be some time_____Brian gets back. A. after B. since C. till D. before 为什么不能选C，请仔细分析句子成分，详解。谢谢老师！
解题思路： It +be+some time+before 固定句型，题意为：仍然需要一段时间布赖恩才能回来。
解题过程：
till不能作连词， 连词 before连结（主句 ）it'll still be some time 和（时间状语从句）Brian gets back 。故只能选D。
最终答案：略
解题过程：
till不能作连词， 连词 before连结（主句 ）it'll still be some time 和（时间状语从句）Brian gets back 。故只能选D。
最终答案：略
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