我有太多报告要在周五前完成，忙得不可开交。

I'm completely ___be ___snowed ___under with reports to finish by Friday.

她整个月工作都堆积如山。

She's been ___be ___snowed ___under at work all month.

请原谅回复缓慢，我们正为准备假期季节而忙得不可开交。

Please forgive the slow reply, but we are ___be ___snowed ___under preparing for the holiday season.