– How long have you been collecting stamps?– Ever ______ I was twelve. I have been collecting stamps for about eight years.A. since B. before C. by
—The meeting _______ because of the fog in Northern China last week. — Oh, it’s too bad! We should take action to improve the air quality.
— I wonder if I can learn English well. — _______. All things are difficult before they are easy.
— I missed the beginning of The Voice of China yesterday evening. —_________! But you can watch the re-play tonight.
What method can you think of _________ with these broken computers?
Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉).