题目内容：

In big cities, there are many ways for people to cross the road.

First, there are usually many ______. People can walk on them to cross the road. And it's easy and safe, ______ drivers may not like this idea. They ______ wait until the zebra crossing is clear.

In some busy places, people can also go ______ the subway(地下通道). Subways are paths under the ______. Sometimes there are many shops on both ______ of these paths. People can go ______ some steps and cross the road. Subways are ______ for cars. Cars ______ stop when people are crossing the road.

Some cities also build footbridges. They're bridges ______ the roads. People can go up some steps and use these bridges to cross the road. Drivers like these bridges too.

1.A. crossings B. crossroads C. corners D. zebra crossings

2.A. so B. but C. because D. then

3.A. want to B. have to C. like to D. hope to

4.A. along B. over C. through D. across

5.A. ground B. floor C. bridge D. trees

6.A. roads B. ends C. sides D. rooms

7.A. up B. down C. into D. from

8.A. good B. bad C. interesting D. difficult

9.A. must B. mustn't C. needn't D. can't

10.A. at B. under C. on D. above