Hi,Mary.Hi,Bill.（）?选项:a、What are you doing?b、What do you do?c、Do you know me?d、How are you doing?选哪个

Hi,Mary.Hi,Bill.（）?选项:a、What are you doing?b、What do you do?c、Do you know me?d、How are you doing?选哪个 Hi mary Im 问句hi,is（ ）Mary?回答Yes,it's Mary. Hi, Hi Hi. Hi Hi L开头 单词Hi,Bill.You l() so happytoday. hi! hi all -Hi,Mary. -Hi,Lucy. I ------- you are here. A.didn't know B.don't know,选哪个,另外如何翻译 -Hi,Mary. -Hi,Lucy. I ------- you are here. A.didn't know B.don't know Hello!Who is speaking?Hi ,Ann （）Mary.A This B It is C This is DThat is请问是选A还是选B?请说明原因, hello,I'm Bill.hi,Bill.I'm Tom.______here.Me too. Hi Mary.Here's a letter ___you.Who is it___? Hi Mary It's been a long time .语法填空 Caller:Hi,is Jill there,please?Mary:__________ hello,I'm Mary.（ ） A.hi,he is Alan.B.hello,my name's Lily.C.hi,her name is Gina.hello,I'm Mary.（ ）A.hi,he is Alan.B.hello,my name's Lily.C.hi,her name is Gina.D.hello,what's your name?