I can not sleep the night before an exam .the前面不需要加介词吗?

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Icannotsleepthenightbeforeanexam.the前面不需要加介词吗?Icannotsleepthenightbeforeanexam.the前面不需要加介词吗?Icannots

I can not sleep the night before an exam .the前面不需要加介词吗?
I can not sleep the night before an exam .the前面不需要加介词吗?

I can not sleep the night before an exam .the前面不需要加介词吗?
不需要