6. My old friend finds carving wood interesting (think)

=> My old friend 

7.We find living in the city polluting ( think)

=>We 

8. People in the library spend all day reading books and get information

=>It

9. It took  me two days to understand the yesterday lesson

=> I

10. We will spend two months going on vacation with our family 

=> It
Làm hết hộ mk với mn ới . Thanks mn nè