Spell Well 12

Spell Well 12 - an exercise made by MrsAki on Spellic.com.
1. Fold the right part of the paper back so that you can't se the answers.
2. Write the correct answer in the space below each question.
3. When done, fold the paper back and compare your answers.
chess
ball
stuff
staff
doll
smell
glass
cliff
cross
cuff
hill
guess