It's half past nine in the morning on Monday,the school children are ____

问题描述:

It's half past nine in the morning on Monday,the school children are ____
A.getting up
B.having classes
C.having lunch
D.going home

It's half past nine in the morning on Monday,the school children are __B__
早上九点半,学校里的孩子们在:-----
A.getting up :起床
B.having classes:上课
C.having lunch :吃午餐
D.going home :回家
只能是B