---Daniel, your books are in a terrible mess on your desk. ---Really sorry. I’ll           at once.

Though I _____ the phone number many times, the foreigner still couldn’t write down.

We believe governments will          a better way to solve the problem of water pollution.

Did you see them ____ basketball this morning? 

 --Driving less, walking more is good for our health. --So I’d rather_____ an hour’s walk to work than consider ______ a car.