Class begins

Class begins Class begins 是什么 Class begins at?是什么意思? 是用Class begin 还是Class begins There ___ the bell.Class begins(go) Let's _____our class.begin begins Our English class begins at eight翻译 Class begins为什么Begin要加S the first class begins at的意思 是Class begin.还是Class begins.还是Classes begin.为什么? class 由被动的吗?比如说上课 是 class begins 还是 class is begun? This school begins _______（class）at 7:45