补全对话；
W.hi,Dave!1._____________________?
M.they are photos.
W.2._____________________________?
M.Sure.here you are!
W.oh.They are all about animals.3._____________________?
M.Yes,I like animals very much.
W.4._______________________________?
M.My favorite animals are lions.
W.But here are some photos of tigers.
M.I want to send them to my new pen pal.He likes tigers.
W.5.____________________________________?