来自李永战的问题
--Tom,whatareyoudoing?--Iam()acake.()里填什么?
--Tom,whatareyoudoing?--Iam()acake.
()里填什么?


--Tom,whatareyoudoing?--Iam()acake.()里填什么?
--Tom,whatareyoudoing?--Iam()acake.
()里填什么?
eating/having/making