---Look! The woman standing there is Mrs Green.
---It be Mrs Green, she has been to England.
| A．may | B．can |
| C．can’t | D．mustn’t |
– ______ do I have to take the medicine?
– Three times a day, after meals.
| A．How long | B．How far | C．How often | D．How soon |
Actions ______ be taken to stop H7N9 from spreading again.
| A．must | B．may | C．can’t | D．needn’t |
She won’t lose weight______ she keeps a diet and takes exercise every day.
| A．unless | B．if | C．because | D．since |
The little boy denied ______ the window with a stone.
| A．break | B．broke | C．to break | D．breaking |
My mother didn’t expect ______ such a lovely present from me!
| A．receive | B．received | C．to receive | D．receiving |