Put the verbs in brackets into Present Simple, Present Continuous or

Put the verbs in brackets into Present Simple, Present Continuous or Future. Bob: Will you be able(you/be able) to go skiing with us next weekend? Peter: No, I .(be) in London then. B: Really ? Why.(you/go) there? P: Theres a very important meeting, and after I..(attend) that I (visit) a friend in Sussex . B: Before you .(leave), (you /give ) me a ring? There are a few things Id like you to buy while you (be) there. P: Yes, of course. I ..(ring)you on Friday.