Complete the sentences with the correct present perfect form of the verbs in brackets.
1. I ______ (swim) in the Atlantic. I remember it clearly.
2. They ______ (run) for hours, so they’re feeling tired.
3. We ______ (visit) Argentina a couple of times.
4. _____ (you / sit) in the sun for long? Your face is very red.
1: have swum
2: have been running
3: have visited
4: Have you been sitting