The morning class______over students rushed out of the classroom for lunch.A.wasB.isC.j h

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The morning class______over, students rushed out of the classroom for lunch.

A.was

B.is

C.j having been

D.being

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。