必修的

Which subjects are compulsory in your school?

在你们校里， 哪些课程是？

Is English an optional lesson, or does everyone have to learn it?

英语是选课还是每人课程？

This is a prescribed course which spreads over two semesters.

这是门期完课。

Three subjects must be taken, viz., English, mathematice and history.

三科目是, 即英文, 数和历史。