so
can do（这句有很多填法,你上下文没列出来,先给一种）
Can
May be可能吧OK!() () shall we leave? Shall we leave() one o'clock? (),I can't leave () two. () about leaving at two thirty? () () .See you. See you. 是对话。。。谢 快啊。。OK!(what) （time）shall we leave?Shall we leave(at) one o'clock?(No),I can't leave (before) two.(How/What) about leaving at two thirty?(No) (problem) .See you.See you.