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Especially D. Properly, do you know Jenny Fox?一Yes. I her since she was born. A. know B. Knew C. had known D. have known43. Dancing on the squares is quite popular among many women, ___________ the season. A. whenever B. Whatever C. Wherever D. whomever44 It39。t believe you could make it to the top in such a short time! A. Which B. what C. that D. if45 .As young adults, it is our_____ to try our best to deal with each challenge in our education with the help of our teacher. A. work B. job C. duty D. task 46. On April 12, 1961,_____27—year—old Yuri Gagarin()became the first human to go into_____ space.A. the。 the C. a。 the 47. —Which city is your favorite? —Hangzhou, of course. It’s the _____place that I want to visit. A. worse B. worst C. better D .best 48. Sometimes most of us probably are angry______our friends, parents or teachers. A. to B. With C. at D. for 49. _____of the two story books are very interesting, so I can’t decide which one to choose. A. All B. Any C. Either D. Both 50. Stephen Hawking can’t walk or even speak,_____he has bee very successful. B. and C. or D. then 51. _____you do, don’t miss this exhibition, for it’s so hard for me to get the tickets. A. Whatever B. However C. Whenever D. Whether 52. Last year was a hard time to my friend Jim, but he didn’t_____ hope. A. pick up B. use up C. put up D. give up ’ ll never forget the day_____ the great scientist came to our school and gave us a speech. A. that B. which C. when D. where 54 We can easily bee unhappy_____ we work out our problems in our daily life. A. after B. if C. until D. unless 55.—Why didn’t you go to play football with us yesterday afternoon? —I _____my mother with the housework then. A. helped B. was helping C. had helped D. have been helping 56. —Will you stay for some more days? —Sorry, I_____. My mother called to ask me to go back at once. A. mustn’t B. may not C. can’