Nancy is really a hardworking student. We often see her ________ books in the classroom.
A．read B．to read C．reads
I'm very glad I have my own room in my house. I ______ do what I want in it.
| A．must | B．have to |
| C．need | D．can |
--- Mum, could I play with my classmates for a while after I finish my homework?
--- _______. But you must come back before supper.
| A．Yes, you can | B．Yes, you could |
| C．No, you can't | D．No, you couldn't |
Finish your homework first, then you'll surf the Internet for half an hour.
| A．can | B．need |
| C．be able to | D．may |
---Mum, I cut myself just now.
----You ______put some medicine on it.
| A．should | B．need | C．must | D．will |
You ______ be polite to the old man.
| A．should | B．can’t | C．might | D．mustn’t |