---Look at the glasses on the desk. Are they David’s?
---They belong to him. I saw him go out with glasses just now.
| A．might | B．could |
| C．mustn’t | D．can’t |
He didn’t go there yesterday, _______he?
| A．did | B．does | C．didn’t | D．doesn’t |
He ______when the UFO arrived. He didn’t wake until the UFO disappeared.
| A．slept | B．was sleeping | C．was doing homework | D．was singing |
He said that light ______much faster than sound.
| A．has travelled | B．went | C．travels | D．travelled |
I won’t pass the exam ______I work hard..
| A．whenever | B．because | C．if | D．unless |
I like music that I can dance _______.
| A．from | B．by | C．with | D．to |