Read these sentences and fill in the gaps with the correct form of the verb in the past simple, present perfect or present perfect continuous. Write down six forms (not full sentences) with a comma (,).

1. My father _______________ (drive) away ten minutes ago.

2. Are we not there yet? We ________________ (walk) for hours.

3. We _________________ (go) to the seaside 2 years ago.

4. They _______________ (be) to Canada several times.

5. I _______________ (wait) here for ten minutes.

6. She _______________ (know) Mark since childhood.