People have cut down many trees every year,so there will be fewer trees, ________

Why are youso _______,Amy—-I thought I lost my purse, but I didn’t. Ifound it in my study!

being fun and good exercise，swimming is a very useful skill

na’s countryside, villagers often have the same family name, but _______ not be closely related.

Five men and three women make up the temporary group to look into the case.In other words,it________eight people .[ ]