If _________, the bird flu would produce a powerful poison that would kill the patients.A. not treat B not treated C untreated D. Both B and C
— Have you ________ how much the trip will cost? —I’m working on it; just have a little patience.
I invited him to dinner, but he___ my invitation with thanks.
The population of this city ,forty percent of which_____, ______ 15% in the last three years
—Guess what? Tom has failed in the exam ____ second time. —How come? He is ___ second to none in English in our class.
—I want you to be my girlfriend, Sara. —___! I have somebody in my mind already.