a.I’ll feed the parrot ______________.
b.I think her nephew will buy presents by ___________________.
c.Look! The cat is washing __________________.
d.I think you can do this exercise ________________.
e.We enjoyed ________________ at the disco.
f.I saw _____________ in the mirror. 
Пожалуйста помогите, только нужно правильное решение.
Заранее спасибо.