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.

Example 0. She _________(stay) at home since Tuesday.

Answer 0. has stayed

Example 1. They _________ (go) to Canada many years ago.

Answer 1. went

Example 2. I _________ (wait) here for ten minutes.

Answer 2. have been waiting


1. Peter ... (help) me for 2 hours.

2. She ... (cook) dinner yesterday.

3. He ... (know) Julie for ten years.