1.根据汉语意思完成句子
问题描述：
1.根据汉语意思完成句子
知道火车消失不见了他们才停止挥手
（ ）the train was out of sight ( ) they stopped waving.
2.单句改错
I will give the book to no matter who needs it
You have taken a very good choice
答
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1.It wasn't until,that
此句采用了not...until...的强调句型
2.单句改错
1）no matter who 改错 whoever
no matter who不能引导宾语从句,只能引导状语从句
2）taken 改成 made
固定短语make a choice 做出一个选择
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