1、They can't roller-skate.

2、They roller-skate down the street.

3、I never learned how to roller-skate.

4、I have never learned how to roller-skate.

5、She roller-skated across rather unsteadily.

6、She traded her roller-skates for Billy's portable radio.

7、Narrator: Sandy and Sue have new roller-skates.

8、Just the thought of strapping on your roller-skates brings a smile to your face.