用括号内所给单词的适当形式填空。
【小题1】Miss Lee ______（teach）us English since she came here three years ago.
【小题2】It is impossible ______（get）his help.
【小题3】I have enough time ______（play）with my daughter.
【小题4】No one ______（know）who the boy is.
【小题5】It seems ______（possible）for Spring Festival Gala to satisfy all 1. 3 billion Chinese.