1. I (hear) that song before.

2. They (travel) to that island many times.

3. you (do) this before?

4. John (live) in London all his life.

5. We (work) on this problem for hours.

6. My little sister never (be) in a concert before.

7. My favorite singer (not give) a concert in my city yet.

8. you ever (ride) a motorcycle?

9. The baby (use up) all the crayons. She needs new ones.

10. She (not arrive) yet.