来自段黎明的问题
【help--WhataretheGreendoingnow?--Theyare____________.A.atthetableB.onthetableC.attableD.ontable】
help
--WhataretheGreendoingnow?
--Theyare____________.
A.atthetableB.onthetable
C.attableD.ontable


【help--WhataretheGreendoingnow?--Theyare____________.A.atthetableB.onthetableC.attableD.ontable】
help
--WhataretheGreendoingnow?
--Theyare____________.
A.atthetableB.onthetable
C.attableD.ontable
C在吃饭(A在桌子旁,B在桌子上,没有D这种用法)