—Mom, can I go out and play with my friends now?
—No, honey, you can’t _____ you haven’t recovered from the knee injury.
A. until B. before C. as D. unless
Sarah hopes to become a friend of shares her interests.
A. whoever B. whomever C. anyone D. whom
—“Could I see Doctor Huang tomorrow?” the patient asked.
—“ ” the nurse said politely, “He is only available today since this evening he will fly to Boston for a three-day meeting.”
A. Not likely. B. Not exactly. C. Not nearly. D. Not really.
My daughter bought me six novels in English from England, most of were the best-sellers of 2013.
A. whom B. what C. them D. which
Our family sat in front of the television on the eve of the Spring Festival, happy___ the Spring Festival Evening Gala.
A. to watch B. watching C. watched D. to have watched
—I heard they went skiing in the mountains last winter.
—It true because there was little snow there.
A. may be not B. won’t be C. couldn’t be D. 
mustn’t be
