1. A: I ... (try) to contact you all week.
B: Sorry. I ... (only/just return) from a trip to Sweden.
2. A: Sarah ... (practise) that piano piece for days.
B: Yes. She has an important concert next week.
3. A: I ... (read) a book called "The Moneyless Man" all week.
B: I heard that the author ... (live) without money since 2008
4. A: Mark ... (work) so hard, he's completely exhausted.
B: Oh, that's why he ... (not/play) football for a while.