I have a sore back. You should _____ down and rest.
--- Nancy, apple on the table is for you.--- Thanks. An apple a day keeps the doctor away.
_______ you study harder, you’ll fall behind others.A. If B. Unless C. Until
She _______ the computer since 2001.A. has had B. has bought C. had
In the past 10 years, great changes ___________ place in Beijing.A. took B. have taken C. have took
– I am not interested in the story.– _________A. Neither am I. B. So am I. C. So I am.