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
I think the music is great, it is worth ______.
A new book on how to preventfloods and droughts is ____soon. — Really I can’t wait to read it.
You must be tired now, Bruce. ______ you have been driving non-stop for at least two hours.
–A homeless man won a lottery ticket. He became rich over night.—___________
Did you take enough money with you? — No, I needed _______ I thought I would