1,write /tomorrow /will /a letter/I
->………………I will write a letter tomorrow.…………………………………
2, if/save /we /we/ a lot of /reuse /money /will /bottles
->…………………If we reuse bottles, we will save a lot of money.………………………………
3,will /robots /able to/ be/all the housework/ us/do /instead of
->……………………Robots will able to do all the housework instead of us.……………………………
4, children /a robot /we /lookafter/ will have /our /
->……………………We will have a robot look after our children.……………………………