There are about four in a month.A．hours B．days C．weeks
（ ） --How many boys? -- . A. Ten. B. I'm fine. C. Good.
（ ）--This is my friend, Wu Yifan. -- . A. I like it. B. Nice to meet you. C. Ok.
（ ） --Happy birthday to you! -- . A. You're welcome. B. Me too. C. Thank you.
（ ）--How old are you? -- A. I'm fine, thank you. B. I'm 9. C. I'm Lily.
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