— The plane is due to take off at 8:00 from the airport.
— ______ we can’t get there in time?
— Try to take another flight then.
| A．As if | B．Even if | C．Only if | D．What if |
Dogs have a very good ___________ of smell and are often used to search for survivors in an earthquake.
| A．sense | B．view | C．means | D．idea |
— Someone might see us.
— ___________? We are not doing anything illegal.
| A．What’s up | B．What if | C．How come | D．So what |
— What do you expect your son to succeed in?
— _________ the entrance exam.
| A．To pass | B．Passing | C．Get past | D．Past |
— 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 |