单选题Mary regretted ______ to John's birthday party last Sunday.

单选题By the end of next year, we will ______.

单选题The novel I bought last week is worth ______, I think.

单选题During (the) discussion, Mr. Sam (remained) silent (when) a (sking his opinion).

单选题Before joining the army, he spent a lot of time in the village ______ he belonged.

单选题As fighting broke out again between the two countries, the negotiations were most ______ to fail. A. like B. possible C. likely D. probable

单选题With so many things ______, the lady could hardly find any time for a cup of coffee. A. attending to B. attended to C. to attend to D. being attended

单选题Speaker A: I' d like to fix an appointment with the personal manager. Will nine tomorrow morn-ing be all right? Speaker B :__________

单选题The boy would do everything but ______ his fault.A. to admitB. admittingC. admitD. would admit

单选题______ the traffic jam, we would have caught our train.

单选题The taxi driver was put in ______ prison because his car had knocked down a child. His wife went to ______ prison to see him twice a month.

单选题We all know that it is possible for ordinary people to make their homes on the equator (赤道), although often they may feel uncomfortably hot there. Millions do it. But as for the North Pole (北极)——we know that it is not only a dangerously cold place, but that people like you and I would find it quite impossible to live there. At the present time only the scientists and explorers can do so, and they use special equipment. Men have been travelling across and around the equator on wheels, on their feet or in ships for thousands of years; but only a few men, with great difficulty and in very recent time, have ever crossed the ice to the North Pole. So it may surprise you to learn that, when traveling by air, it is really safer to fly over the North Pole than over the equator. Of course, it is not true about landings in the polar region, but the weather, if we are flying at a height of 5,000 meters above the Pole is a delight. At 4,000 meters and move above the earth you can always be sure that you will not see a cloud in the sky as far as your eyes can reach. In the tropics (热带), on the other hand, you are not certain to keep clear of bad weather even at such heights as 18,000 or 20,000 meters. Aeroplanes can"t climb as high or as quickly in cold air as in warm. Nor can clouds. In practice, this is an advantage to the aeroplane, which is already at a good height when it reaches the polar region and so does not to climb, while at the same time cold air keeps the clouds down low.

单选题If a person is not allowed to follow his sleep routine, he will probably ______ .

单选题He broke the world __________ for the 100 meters．

单选题When ______ why he walked in without permission, he just stared at us and said nothing.

单选题English is used by more people than is______language except Chinese.A. anyB. any otherC. otherD. all other

单选题Of the two students , one is named Tom and another named Fred.