--You should_______ this book before Friday, or you should renew (续借) it.
--OK.
A. give back B. give away C. give up
Thomas wants to know ______Nina lives.
| A．where | B．who | C．what | D．if |
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 |