A.It's good to stay at home for you. B.After the meal,don'tleave at once,or you seem to have come only for the meal. C.Could you give me a hand? D.What am I supposed to do in America? E.But I'm a bit nervous. F.You're supposed to leave before the meal. G.It's impolite to arrive late. 导航页导航页 A.It’s good to stay at home for you. B.After the meal,don’t leave at once, or you seem to have come only for the meal. C.Could you give me a hand? D.What am I supposed to do in America? E.But I’m a bit nervous. F.You’re supposed to leave before the meal. G.It’s impolite to arrive late