No one will be sad because humans will have learnt to fix many of the problems that affect us now, like war, pollution and hunger, ________ ?

I don’t think she will come to the meeting on time, ______?

—_______ does it take to walk from your home to your school?— Fifteen minutes. 

–Are you Linda?-Yes, _________.

---______ do you like the film ?   ---It is very interesting .