—How do you like the popular documentary “A Bite of China”(《舌尖上的中国》)? —Excellent! You won’t realize how wonderful our Chinese food is _____ you watch it.
I became a student ten years. I have been a student 1996. I have studied here about 10 years. A. ago, since, for B. ago ,for ,since C. ago, before, for D ago, in, after