问题描述：
3道用所给词的适当形式填空
Marry likes tacking while (do) homework with others
I happened （meet） one of my old friends while I was walking in the street
Our teacher often asks us （not cut） in line when we are waiting for a bus
Marry likes tacking while (do) homework with others
I happened （meet） one of my old friends while I was walking in the street
Our teacher often asks us （not cut） in line when we are waiting for a bus
问题解答：
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