1 . Be careful when you walk ________ the street.

A．cross

B．across

C．through

D．past

2 . If a person ________ (across) the river of difficulty, he will see a different beauty.

3 . We must look right before ________ (cross) the road.

4 . Teachers say that children must not ________ the road alone.

A．across

B．crossing

C．cross

5 . 为了到达这个公园，你只需要穿过中央大街这条街。
________ get to the park, you just have to ________ Center street.

6 . —There is not a bridge over the river, so these students have to go on a ropeway to _________ the river.
—What a hard life they’re living!

A．across

B．crossing

C．cross

7 . He has to ________ (across) a river to school.

8 . We should turn right at the ________. (cross)

9 . You must be careful while c________ the road.

10 . Are you afraid ________ (cross) the river on a ropeway?