—_____ do you water the flowers? —Twice a day.
| A．How many | B．How many times | C．How often | D．How soon |
— There are many people over there. What to the old man?
— Sorry, I don’t know.
| A．was happened | B．will happen | C．were happened | D．happened |
— I called you yesterday but no one answered.
— Well, Maybe I in the garden at that time.
| A．worked | B．am working | C．was working | D．would work |
We won’t start the meeting our teacher arrives.
| A．while | B．until | C．when | D．or |
I find hard to get on with him.
| A．that | B．this | C．it | D．is |
Grand ma is now at .
| A．the doctor’s | B．the doctors | C．the doctor | D．doctor’s |