In case of emergency, whether knowing how to apply first aid or not really ________ in matters concerning wounds like swollen wrists, broken arms, burns, cuts, and so on.[ ]

Most of the apples in the bag have gone bad.-Yes，only three are good.The rest________gone rotten.Just now I ate part of a big one，and the rest________thrown away.[ ]

People send out sky lanterns to ask for help when in trouble, but now sky lanterns ____ celebrating the festivals.

He likes helping others, _______ those who are in trouble.

______ the weather, we had a pleasant time