—What a clear blue sky!
—Yes, I have never seen sky.
| A．a more beautiful | B．a most beautiful |
| C．the more beautiful | D．the most beautiful |
---Are you going to ____________ your friends to your party?
---Yes, sure.
| A．like | B．want | C．make | D．invite |
---Must I clean the floor now?
---__________. It is too dirty.
| A．Yes, you needn’t | B．No, you needn’t |
| C．No, you mustn’t | D．Yes, you must |
---How long may I _____________ the book?
---Two weeks.
| A．borrow | B．lend | C．buy | D．keep |
These aren’t my keys. Mine ___________ in the drawer.
| A．is | B．are | C．am | D．were |
The old man is too tired _________ go any further.
| A．enough | B．can’t | C．to | D．so |