她说她很难过，但补充说她觉得自己做出了正确的决定。

She was sad, she said, but ___added that she felt she had made the right decision.

导游告诉我们他们叫它天鹅湖，因为有很多天鹅，并补充说这些天鹅来自全国各地。

The guide told us they called it Swan Lake because there are lots of swans and ___added that the swans come from all over the country.

他解释了计划，然后补充了一些重要细节。

He explained the plan and then ___added some important details.