1.Whendoesthetrainarrive?Theteacherwantedtoknow.Theteacherwantedtoknow_____________,空格是不是少了一个
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题目内容：
1. When does the train arrive? The teacher wanted to know.
The teacher wanted to know ________ _____,空格是不是少了一个
优质解答
The teacher wanted to know 【when the train arrived】
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