---Listen! Peter is singing in the classroom!
---It _____ be him. He has gone back to his hometown.
| A．must | B．mustn’t |
| C．may not | D．can’t |
You had better ____ jeans. If you don’t, we won’t let you in.
| A．wear | B．put on | C．to wear | D．to put on |
The old woman has a bad cold. She is feeling________ today than yesterday.
| A．much ill | B．a little bad | C．a little badly | D．much worse |
This piece of music is ________________ that one.
| A．as boring as | B．not as boring than |
| C．more bored than | D．so boring as |
Sally asked________________________.
| A．how could she get to the zoo. | B．how she can get to the zoo. |
| C．how she could get to the zoo. | D．where was the zoo. |
_______ the boy was walking down the street, the UFO landed.
| A．While | B．After | C．Before | D．until |