-Our classroom__________ every day.-So it is. It’s our duty to keep it clean and tidy.A. cleans B. is cleaning C. is cleaned
—English isn’t as________as Chinese. —Maybe,perhaps it’s just because Chinese is your native language.
—There is something wrong with my foot.Dad,could you please________? —No problem.
—Always look around________you cross the street,David. —OK,I know,Mom. A.until B.before C.unless
She looked at me________disbelief when I told her the news.
Keep________till you see the light,then turn right.