请教几个英语单项选择Could you please tell me the way to the station?So

1.B
You ( may )ask the poliseman over there.
你可以问一下那边的警察.
may 在这里表示对方提出的建议.
must 表示命令的语气,意思是：必须.
2.C
You've made ( fewer ) mistakes this time than ever before.
比较级,mistakes是可数名词,所以用 fewer.
3.D
Travelling by air is ( far ) more expensive than by train even though the are tickets are on discount .
very,a lot of不能修饰比较级.
这句话的意思是：乘飞机旅游比坐火车快多了.
far 在这里的意思是：到很大程度;很;极
可以修饰比较级.
many虽然后面可以更比较级,但是用在这里不够好.
4.C
Though the price of the camera is OK,
( yet )I don't think I'll take it.
Though 虽然不能和but一起用,但是yet可以,而且和but的意思一样.
5.A
The city is trying to ( improve )
the living environement of the people.
improve:改进,改善;增进
rise:(数量、程度等)增加,上涨
lift:举起;抬起(东西)
increase:（数量上的）增大;增加