We are __________ (go)to the Red Hill Forest Zoo for a school trip tomorrow．
Monkeys are very clever，they can learn to ride bicycles __________ (easy)．
一I’m leaving for London for a holiday tomorrow．
一Enjoy __________ (you)．
I advise you __________ (not come)to school late again．
Who is the __________  (write)of Harry Potter Ⅳ?