During the examinations we are supposed to remain in our seats, fix our eyes on the papers, _____to anyone.

A．instead of speaking                      B．and not to speak

C．rather than speak                       D．but shouldn’t speak

-----Is this the first time you _____Chengdu ?

-----No. But the first time I _____here, the city wasn’t so beautiful.

A．visited, came                           B．visited, have come

C．have visited, have come                  D．have visited, came

The concert by Lang Lang was so well ______ that all the tickets had been sold out on the first three days last month.

A．received          B．recognized        C．admitted          D．taken

The astronauts started their journeys in rockets _____ forward by jets of hot gas.

A．drove            B．driven            C．driving            D．to drive

-----Now, where is my ticket ?  

-----______. We will be late for the film.

A．Take it easy        B．Come on          C．Don’t worry      D．Take your time

It is not just the size of the Olympic Games ___makes them unique, but ____they mean to us .

A．which, that        B．that, what         C．that, because       D．that, that

-----Can you come for dinner on Sunday or Saturday?

-----I’m afraid _______ day is possible.

A．either            B．neither           C．some             D．any

The science of computer, _______rapid progress has been made in recent years, is the most important of all science.

A．which            B．with which         C．in which          D．to which

-----Did you have a hard time traveling back home?

-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.

A．snowed, were                          B．was snowing, had been

C．had been snowing, had been               D．had snowed, were

Great efforts to increase agricultural production must be made if food shortage _____ avoided.

A．is to be           B．can be            C．has been          D．will be