求一道英语完形填空题答案

求一道英语完形填空题答案
根据短文内容,在短文后面的四个选项中选择一个可以填入相应空格内的正确答案,并把答题卡上对应题目的正确答案标号涂黑.
London is a beautiful city.It is very large.The Thames River runs 42 the city from west to east.So the city has 43 parts:the South and the North.In the North,there are important buildings,shops,big parks and interesting places.
The weather in London is good.In winter it is not very cold and in summer it is not very hot 44 the city is near the sea.People say 45 London is a foggy city and it often rains.It is true.
Last year,when I 46 in London I met one of the 47 fogs in years.You could hardly see your hand in front of your face.Cars and buses moved along with their lights on.When evening came,the weather got 48 worse.The fog was as thick as milk.49 the buses and cars stopped.I had 50 an important meeting on the other side of the town,but it was impossible to find a car.I had to get there 51 .
42． A.about B.through C.in D.along
43． A.four B.six C.five D.two
44． A.because B.so C.but D.or
45． A.what B.where C.that D.which
46． A.were B.am C.be D.was
47． A.big B.bigger C.bigest D.biggest
48． A.wore B.even C.very D.some
49． A.All B.Each C.Every D.None
50． A.to join B.to go to C.take part in D.join in
51． A.by car B.by bus C.on foot D.on the foot