In Britain,sales of cigarettes have been reduced __________ 30% in the past ten years.
| A．for | B．to | C．from | D．by |
— I think the waiter has forgotten us. We ________ here for over half an hour!
— I think you’re right. He probably thinks we have already ordered.
| A．are waiting | B．have been waiting | C．have waited | D．will wait |
Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
| A．setting | B．sets | C．set | D．to set |
She was over the age limit and ________, her application for the job was rejected.
| A．as a result | B．in conclusion | C．worse still | D．what’s more |
After five years of preparation, Shanghai is presenting the world _______ many say is the greatest Special Olympics.
| A．when | B．what | C．where | D．which |
Scientists are trying to develop a special material, _______ they will make use of in space.
| A．it | B．that | C．what | D．one |