Your son has kept _________ for two hours. You’d better ask him to have a rest.
-------Are you going to buy the red car or the black car? --------The black car. I don’t have enough money. So I will buy the car which is ________
The doctor told me_____ too much meat.
My sister______two hours writing the article yesterday.
The science lab is _______the right of the library?
Go straight and ______ left. The hospital is next to the post office.