I have two sisters, but_________of them is a teacher.
| A．all | B．neither | C．both | D．none |
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 |
The old lady didn’t know when the house caught fire.
| A．how to do | B．how to do with it | C．what to do | D．what to do it |
— Don’t forget to close the door when you leave the room.
— No, I .
| A．don’t | B．won’t | C．mustn’t | D．can’t |