照顾两个吵闹的孩子一整天让她精疲力尽。

Looking after two noisy toddlers all day ___frazzled her completely.

经过一整天的紧张工作，我的神经都快崩溃了。

After a full day of stressful work, my nerves are completely ___frazzled.

连续加班一周后，他整个人都累垮了。

After working overtime for a week, he was completely worn to a ___frazzle.