单选题Lewis (had to) travel (by bus) as his car (had been damaged) in an accident some days before and he (was failed) to get it repaired. A. had to B. by bus C. had been damaged D. was failed

单选题Speaker A: I was hoping to get some bread from the bakery before it closes. Speaker B: ______

单选题Helen apologized for ______ to attend the party. A. her not being able B. her being not able C. her to be not able D. her not to be able

单选题The top of the world is a wonderland. In winter, the temperature often falls to -30℉ and the sun never rises. The ocean is surrounded by frozen ground. There are few people or trees, but to polar bears, the Arctic (北极) is home. Polar bears have thick fur, big paws and other features that make them well prepared for life in their tough environment. In fact, they need the Arctic sea ice for survival. But climate change is causing larger and larger areas of summer sea ice to melt (融化). Experts say that if warming patterns continue, the Arctic could be free of summer sea ice by 2050. That may cause two-thirds of the world"s 20,000 polar bears to be gone by then too. Polar bears can"t survive for long on land. Seals are their main source of food. The only place where polar bears can hunt seals is on the ice. Although these bears are strong swimmers, they are no match for lightning swift seals in the water. A polar bear has brilliantly clever strategies to overcome this disadvantage. In winter the bear waits motionless beside a seal"s breathing hole, which is a narrow tunnel through the ice. Often many hours pass before the seal comes up for air and the bear kills it with a powerful blow of its paw. In summer, the polar bears that live on land eat very little and wait for the sea ice to return. With the sea ice forming later in the year and melting earlier, polar bears do not have enough opportunity to hunt and eat. Less sea ice makes it harder for the bears to catch the seals. The bears must swim longer distances between ice packs (大片浮冰), and they can"t always make it. The ice is also getting thinner. These conditions can cause polar-bear cubs to become separated from their mothers, who provide them with food. Steven Amstrup is the chief scientist of Polar Bears International. The group aims to save the bears and their home. "The more people who see polar bears and understand their difficult situation, the better the chance we"ll alter our warming path in time to save them," he says.

单选题The girl fresh from college ______ with the boss and was ready to leave the job. A. fell through B. fell in C. fell behind D. fell out

单选题My uncle ______ from the company because he was made to undertake dangerous assignments. A. removed B. emerged C. resigned D. shifted

单选题I spent the whole day repairing the motorbike. The work was______easy.

单选题We must remember that______fashion is not the most important thing in______life.

单选题Rosie: Sorry, I overslept. My clock didn"t go off this morning. Francie: ______ Perhaps you should buy a new one.

单选题You will get your camera next Monday. We regret any inconvenience _____ to you.

单选题Sorry, officer. I ______ at 80 miles but I didn"t see any sign in the area telling people how fast they can drive.

单选题__________ ,we will review all the lessons before the final exam.

单选题The manager has his employees ______ a business report every week.

单选题He (wished) he (didn"t tell) her the truth (that) brought her (so much) pain.

单选题The student continued his university study ______ his family was poor. A. even though B. as though C. now that D. since

单选题There (will be) three (hundreds of) students (taking) part in (the speech contest).

单选题She did it ______ our efforts to stop her.

单选题I felt like ______ to him, "Don't be such a complainer all the time. " A. say B. saying C. to be said D. to say

单选题_________ has already been pointed out before, English grammar is not a set of dead rules.