三种英语题目帮忙解决，谢谢了！一：语法填空：I am so happy!That is _____ I am on th

三种英语题目帮忙解决，谢谢了！
一：语法填空：I am so happy!That is _____ I am on the soccer(什么意思?) team.
二：改错：A(As) a student,B(I'd) like to C(join in) the Reading Club. ( )_____
三：语法填空：My hobby is playing chess.It can teach us _____(think).It's not difficult _____you to learn the rules of the game.You don't need much _____(play) chess —— just a chess set and someone to play with.