In the US, students can do almost anything they want in class, ____ they don’t make too much noise or disturb others who want to learn from the teacher. 
#31965
A
even though
B
now that
C
so that
D
as long as
推荐题目
 __________I see him, he looks sad.
#31022
A
Every now and then
B
Every now and again
C
Every so often
D
Every time