HowaboutmyfoodI的精选

问题详情： ---Howaboutmyfood?I____hereforalmosthalfanhour. ---I’msorry,sir.Itmustbereadybynow.A.havebeensitting  B.amsitting   C.hadbeensitting   D.wassitting【回答】A知识点：现在完成进行时及其...