1 . 如果有必要，用剪刀剪掉烧伤部位的衣服，除非你看到衣服与被烧伤的皮肤粘连在一起。
Remove any clothes using scissors________ ________, unless you see the fabric ________ to the burnt skin.

2 . The questions raised by the math teacher were so difficult that I ________ on the first one. (stick)
数学老师提的问题太难，第一个我就答不上来。