Complete the questions with tag endings

Example: F. Drake sailed around the world in 1580, ___? — F. Drake sailed around the world in 1580, didn't he?

1. Wales is famous for its green hills and beautiful valleys, ____?
2. The boys didn't take part in the cycling trip last summer, ___?
3. You are going to send SMS to Olivia, ___?
4. Emily wants to become a journalist, ___?
5. The participants won't plant the trees during the trip, ___?
6. Jim has already got his participant badge, ___?
7. We can join the students, ___?