The mobile phone has influenced people’s life a lot since it _______.

Do you know what Millie and Andy were doing at 8 o’clock yesterday?—Yes.While Millie ______ TV, Andy ______ a book in the bedroom.

Are you busy today?—Yes, I have ______ homework to do.

Peter said that he would come over to have dinner with you tonight.—But I think he. I have been alone for an hour.

We will wait until everyone ________ back.