用所给单词的适当形式填空答:21 will leave , have finished , will leave 22 have , studied ;have planned;hope ;will , do , leave will return , get 23 am , will go 24 will give 25 will snow 26 Will , be will visit 27 Shall , get 28 will be 29 doesn't believe , sees 30 will win 加油!