—How's it going? — . A. It's great b. You are welcome c. Thanks a lot
—Look out! Don’t run the red light when crossing the road next time. —_______________.
To solve the traffic problem, more and more bridges ____________ across the river every year.
Be quick! Jim _______________ for us downstairs.
—How long have you __________ this book? —About thirteen days.
—_________is it from your school to your house? —Only a few minutes’ ride.