问题描述：
补全对话：Do they need to _______ to have classes?How will they study?How will they
Do they need to ___________ to have classes?How will they study?
How will they get in touch with the ____________ and classmates?
Will they still __________,pens and exercise books?
Do they need to ___________ to have classes?How will they study?
How will they get in touch with the ____________ and classmates?
Will they still __________,pens and exercise books?
问题解答：
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