All flights because of the snowstorm ,many passengers could do nothing but wait.A.ha

All flights _________ because of the snowstorm, many passengers could do nothing but take the train.

A) had been canceled B) have been canceled

C) were canceled D) having been canceled

A、were cancelled/ to take

B、having been cancelled/ take

C、have been cancelled/ take

D、had been cancelled/ to take

于今天上午机械故障，9点钟以前的航班都被延误了。()

此题为判断题(对，错)。

All the flights before nine have been delayed because of poor visibility this morning.

A.由于今天上午能见度差，9点以前的航班都被延误了。

B.由于今天上午能机械故障，9点以前的航班都被延误了。

C.由于今天下午能机械故障，9点以前的航班都被延误了。

D.由于今天下午能见度差，9点以前的航班都被延误了。

A．had been canceled

B．having canceled

C．have been canceled

D．having been canceled

fs and telegraph wires. These birds are swallows. They are【C2】______. together because, very soon, they will be flying【C3】______ to much warmer lands, where they will find【C4】______the small flying insects on which they【C5】______. There are no such insects【C6】______in Britain during the winter; it is【C7】______cold for them.

The swallows settle, fly off, swoop, and【C8】______again. This they do many times, for they are making short【C9】______ flights in order to be fit for the long journey【C10】______them.

【C11】______of these migrating birds leave Britain in the autumn. They fly【C12】______for hundreds of miles【C13】______they reach the warm lands of Africa. But not all the birds get there, for many of them perish in the stormy weather they meet with【C14】______.

In the spring of the following year they【C15】______the long and tiring journey back to Britain. They return to the identical barn or tree in the【C16】______district which they had left the【C17】______autumn. How do these birds find their【C18】______there and back over such vast distances？ Nobody knows exactly【C19】______, but it has something to do【C20】______ winds and air currents.

【C1】

A．being perched

B．perched

C．being perching

D．be perched

ey want to go quickly and safely across the land, across the sea or right across the world, and they know Heaven Air will take them where they want to go whenever they want to go. Heaven Air flies all the newest and fastest planes to more towns and cities of the world than any other airlines. Do you want to go to Paris, Washington, Tokyo？ Heaven Air will take you there, at all times of the day or night, right through the week. But Heaven Air flies not only to the Biggest cities, we also fly two or three times a week to towns and cities in the very center of Asia, Africa and South America. People fly with Heaven Air because they know they will leave on time and arrive on time. They know that they will receive the best food and watch the best films. Heaven Air is second to none.

1). Heaven Air is the name of ().

2). Travelling with Heaven Air is ().

3). Heaven Air can take you to Paris ().

4). Most flights of Heaven Air go to ().

5). According to the advertisement, Heaven Air believes it is ().

(1).A、a plane

B、an airline

C、a travel service

D、an advertising program

(2).A、comfortable but expensive

B、cheap and pleasant

C、exciting but tiring

D、quick and safe

(3).A、on weekends only

B、just on weekdays

C、any time in a week

D、two or three times a week

(4).A、big cities

B、small towns

C、both big and small cities

D、the very center of Asia

(5).A、the second biggest in the world

B、the second best in the world

C、the biggest in the world

D、the best in the world

A.cancelled

B.rejected

C.prevented

D.stopped

______ the pilots’ strike, all flights have had to be cancelled

A.As a matter of

B.As a rule

C.As though

D.As a result of