Mr. King didn't know ________ yesterday evening.
| A．when does his son come home | B．when his son comes home |
| C．when did his son come home | D．when his son came home |
The mobile phone has influenced people’s life a lot since it _______.
| A．invents | B．invented |
| C．is invented | D．was invented |
. –Mary, is this ______ umbrella?
--No, it’s not mine. It is _______.
| A．you; hers | B．your; hers |
| C．yours ; her | D．your; her |
The tall building has ______ floors. And Tony lives on the ______ floor.
| A．twelve; twelve | B．twelfth; twelfth |
| C．twelfth; twelve | D．twelve; twelfth |
________ clever girl she is! She got a good mark in the math exam again.
A. What B. What a C. How
May I ask _______? Maybe I can help you find it.
A. what are you looking for B. what you are looking for C. what you are looking