There is a(n) ________ of 200 yuan for the person who returns the lost necklace to its owner.
| A．reward | B．prize | C．award | D．Praise |
. Jane Goodall with her assistants ______ for the forests to learn more about the chimps.
| A．are setting off | B．is setting off | C．have set off | D．sets off |
Unfortunately, his father died, ______ the family even worse off.
| A．left | B．to leave | C．leaves | D．leaving |
Up to now, the weather______ pleasant for the journey. I hope our good luck will continue.
| A．is | B．was | C．has been | D．will be |
—There ______ be anybody in the classroom, for the lights are off.
—I’ll go and check.
| A．mustn’t | B．won’t | C．needn’t | D．can’t |
Chinese students usually spend ______ the students of the US studying in their free time.
| A．twice as many hours as | B．as twice many hours as |
| C．twice hours as many as | D．as many as twice hours |