So kind of you to give me a ride to the station.– ___________

On rainy days, accidents _____ happen sometimes on steep roads.

I have _____ an eye _____ you now, so youdo as you _____!

What do you think of pollution of the big factory— It’s a serious problem. We should _____ all the people to do something for it.

What _______ great fun it is to play ______game of basketball after a whole day of study!