1 . The villagers are ________ a bridge over the river so that their children needn’t go on a ropeway to get to school.

A．crossing

B．building

C．painting

D．polluting

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

3 . Follow the traffic rules. When the lights are red, you should stop _______ the road.

A．crossing

B．to cross

C．across

D．go across

4 . You mustn’t cross the road when there is no green man.（改为祈使句）
________ ________ the road when there is no green man.

5 . The boy is very kind. He helps that old woman _______ the street.

A．go across

B．crosses

C．across

D．going across

6 . Uncle Wang c________ the river by boat to sell vegetables every day.