Definition: in school, a division of time in the day when a subject is taught Level: B1
我们每周有六节科学课。
We have six ___periods of science a week.
这节课结束后，我留下来问了老师一个问题。
After the ___period ended, I stayed to ask the teacher a question.
我们的历史课就在午饭后。
Our history ___period is right after lunch.
