她说她累了，但补充说她会把工作完成。

She said she was tired, but ___added that she would finish the work.

他解释了规则，并补充说我们应该小心。

He explained the rules and ___added that we should be careful.

我同意你的计划，并且我想补充说我们应该立即开始。

I agree with your plan, and I ___add that we should start immediately.