招领启事,用英语写假设你是Tom,你看到了一张招领启事,请你给好朋友Bob写张便条,问问他是否丢了书包?至少4句话.

Bob：
Have you lost your schoolbag I saw a notice ahout missing schoolbag downstairs just now.Its description seems to be yours.If you receive this note,call me.
Yours Tom