请根据对话内容，填入所缺的单词，补全对话。（每空一词）。（2.5分）
M: Hey ,Rose ._______ are we going for our school trip ?
W: Don’t you know , Tom ? We’re going to the West Hill .
M: Sounds exciting . How _____ is it from our school to the West Hill ?
W: It’s just two miles . All of us like to go there by bike .
M: Ok . I just bought a new bike yesterday ._______ long will it take ?
W: About twenty minutes .
M: Where and when are we going to meet ?
W: Let’s _______ it 9:30 tomorrow morning at the school gate .
M: Ok .I’ll be there on time .Oh , will Lily go with us ?
W: I’m _______ not . She has to take a computer lesson . But her brother David is going with us .