问题

To the students, it’s _________ to enjoy a video during the class.
A:a, an
B:a, a
C:an, a
D:an, an;
B:a, a
C:an, a
D:an, an;
正确答案是:
同类题型
Nanjing Underground Line 10 ______ on the morning of February 27th, 2014.
Do you know him well— Sure. We _____________friends since ten years ago.
Got any information about High School Examination? — Well, I was trying to, but found .
Hello, you ________ 86558225. I’m sorry, but I’m unable to answer your question right now.[ ]
I still cannot believe that I amthisprize that I won last year.