1.空闲的，免费的________ 2.向上__________ 3.野餐__________ 4.打电话，称呼_______
5.何时_____________ 6.明天______________ 7.唱歌___________ 8.歌曲_________________
9.飞行,放_________ 10.风筝_____________ 11.时间__________ 12.请求，询问____________
13.回到，背部______ 14.晚上____________ 15.路，方式________ 16.星期日_____________
17．Lucy and Linda ______________ (有空) this Sunday.
18.Lucy doesn’t want to _________________ () with Linda.
19.I ________________ (不得不) get some water.
