Open the brackets: 1. don’t worry. he (to speak) to you before he (to leave). 2. we (to know) each other since childhood. 3. this book (to give) to her 3 days ago. 4. these flowers (to smell) nice. 5. money (not to buy) happiness. 6. sam feels tired as he (to work) all morning.
2have known
3was given
4smell
5doesn't buy
6has been working