A.Sorry. | B.It's on the desk. | C.Yes. |
A.Thank you. | B.You can't. | C.Sure. |
A.Yes,I am. | B.Yes,I can. | C.Yes,I do. |
A.What's in the box? | B.What time is it? |
A.How are you? | B.How old are you? |
A.What's on the desk? | B.What class are you in? |
A.Who's that woman? | B.Who's that man? |