我现在没有空，用英语有哪些地道表达方式

I'm tied up with some tasks.

I'm swamped right now.

I'm in the middle of something.

I'm in the middle of a tight schedule.

I'm knee-deep in work.

I'm slammed with tasks.

I'm buried in work.

I'm caught up in something.

I'm up to my ears in work.

I'm in the midst of a project.

I've got my hands full.

I'm in the thick of it right now.

I'm occupied at the moment.

I'm engrossed in my work.

I'm deep into this assignment.

I'm currently engaged in something.

I'm immersed in a task right now.