英语单词拼写1，it looks like rain.please take an u___ with you.2,th

英语单词拼写
1，it looks like rain.please take an u___ with you.
2,the piece of music s___ beautiful.
3,open the windows，please。let some 。f___ air in
4,he's studied english harder and has i___ much in english in the past few months.
5,it's i____ for you to finish so much work in such a short time.