21. play tennis with me 和我一起打网球
20.studu for the math test 为数学考试而学习
19. find out 找到,弄清楚,查明
18. look for 寻找
17. soccer practice 足球练习
16.go to the mall 去购物中心
15.Birthday Party 生日聚会
14.go to the baseball game 参加棒球比赛
13.Thanks for asking(inviting)谢谢邀请
12.maybe another time 也许下一次吧