Możesz to połączyć. :)

a) I'm sure robots will cook and clean for us. we won't do any housework.
b) Machines will do everything. then what will we do? i think we gwill get bored!
c) i think people will have holiday on the moon, but many people won't go. it will be too expensive.
d) i think everyone willl ride bikes. people won't drive cars any more.
troche sie różnią jeden od drugiego, ale zawsze możesz jakoś zacząc. :D