_____ our earth, otherwise it will be no longer fit for us to live on.

Jack, please don’t play the CD, or please ________. Father is sleeping.— OK. No problem.

Whathonest boy! And he isbest student of all.

What do you think of “Where are we going ,dad”, Mum?—Perfect! Though I have seen it once, I want to see it _____ time.

Please talk______ Bill______ more information.[ ]