1. Transform the sentences and use either Present Perfect or Present Perfect Continuous. Translate them. e.g. Betty has been writing this essay since 9 o’clock- (already)
Betty has already written this essay.
1. I have learned this Russian language rule by heart! – (all day long)!
2. Nick has been talking to Sam on Skype since morning. – (just).
3. I have been cleaning my room for 1 hour. – (yet)
4. We have walked 5 km. – (for 2 hours).