首先，将黄油和糖打匀，然后慢慢加入鸡蛋。

First, beat the butter and sugar together, then slowly ___add the eggs.

我每周都会往我的阅读清单里加一本新书。

I ___add a new book to my reading list every week.

为了让汤变辣，加入一些辣椒。

To make the soup spicy, ___add some chili peppers.