a．What does Mr Green do?
b．No, he isn't．He's ill in hospital．
c．He's a teacher．
d．Is he teaching now?
从A、B、C、D中选出一组正确的排列顺序，使所给的句子组成一段文理通顺的对话．
a．How long have you worked here?
b．In 1992．
c．When did you come here?
d．For about ten years．
--- Lin Tao, could you ________ me this book, please?
--- Sorry, but I ________ it for only half an hour. I haven't finished it.
---________ are Helen's pants?
---They're blue.
---Could you ask him if he ________ to my birthday party next Sunday?
---I will, if I ________him this afternoon.
---What's your father like?
---________.
---Please don't forget to take part in our club party tomorrow.
---How are you, Li Lei?
---I'm ________．Thank you．Which is wrong?
---Who’s that woman with Ann?
---I’m not sure. It ________ be her mother.
---Where is my umbrella?
---It’s a fine day. You ________ take an umbrella with you.