This beautiful song is perfect for practicing using the subjunctive for expressing wishes/hopes.
Also, the creativity in the metaphors gives students plenty to interpret (I have them work in small groups) while expanding their vocabulary. At the end of this activity sheet, students can put that creativity to practice by writing another verse to the song.
This free download includes an 1. activity sheet with a cloze activity, vocabulary matching activity, and some discussion questions and 2. an answer key.
You can find this and other activities and resources on my blog, www.estudiafeliz.com
If you use this activity in your classroom, I´d love to know how it goes!