问题

The students are having an English lesson ______ their classroom. [ ]
A: in
B: on
C: for
D:of
B: on
C: for
D:of
正确答案是:
同类题型
Chinese is becoming more and more popular. It ________ in many schools in foreign countries.
Boys and girls, are reading English books? —Yes, are.
That day I saw some parents____at the back of the classroom,___to the teacher .
Putting on a happy face not only helps us make friends but also makes us feel better. —- _______.