A. ran B. walked C. droveD. cycled

They drove at a steady rate.（英译中)

We drove past the house.（英译中)

Cycling is a good exercise. ____, it doesn’t pollute the air. A. But B. Therefore C.

A small child has to learn to keep its （) before he can walk far. A. border B. bloc

A. talk B. restC. walk D. game

Most young people enjoy physical activities walking cycling football or mountaineering