—Don’t forget ______ your homework. John. —Ok. I'll do it right now.A. doing B. do C. to do
---If there are ______ people driving , there will be ______ air pollution.--- Yes, the air will be fresher.
--- I don’t think teenagers should drive cars.--- _______. They aren’t serious enough.
--- Morning, class! Good luck to all of you in the exam!--- Morning, teacher. ________.
There ______ a group of people _______on the beach.
— you your dictionary yet?—Yes, I , I it ten minutes ago.