______ useful robot! It can help with the housework like a human servant.
A. What an B. What a C. What D. How
--- Hi! I’m Amy.
--- ___________
A. Hello! I’m Amy. B. Nice to see you. C. Hello, My name is Frank.
---Hello! Cara!
---_______________
A. Hello! Dale. B. I’m Emma. C. Good morning, Dale.
--- Good afternoon, Amy.
--- _____________
A. I’m Ben. B. Good afternoon, Ben. C. Hi, this is Ben.
你想知道这个是什么？你应当问________
A．Hi，what's this?
B. Hello, what's your name?
C．Nice to meet you.
想向别人打招呼问好, 你不可以说_______________
A. Hello. B. Good evening, Ben. C. What’s this?
