when you meet an older people,you should( )with them.a.shake hands b.hug c.wave

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• when you meet an older people,you should( )with them.a.shake hands b.hug c.wave
• when you meet an older people,you should( )with them.a.shake hands b.hug c.wave
• 英语翻译Ms Taylor,what should I do when Imeet new people?When you meet older people,you shake hands with them and say,"My name's Pat.It's nice to meet you.''With younger people,you can wave and say ,"Hi.I'm Pat."Should I hug them?No.We usually don't hug people when we meet them the first time.We only hug our friends.When the family isn't at home,how should I answer the phone?First,say,"Hello."Then take a message.
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• 先化简再求值 [2x²-(x+y)(x-y)]·[(-x-y)(y-x)+2y²] 其中x=1y=2