I've been studying English for two years.
2) What are you looking for? keys. I've been looking for them for 15 minutes already, I've already looked everywhere. Do not rush. Here they are! They always lay under your gloves. Thank you.
3) He sat down to rest. He walked without stopping all day and walked no less than twenty miles.
4) When I came home, my son was watching TV. I got angry because he watched TV for 4 hours and did not go for a walk.
5) You should have invited them in vain. They are always late. By the time they arrive, we will wait for them for two hours and it will be late to go somewhere.