我...呃...不知道该选哪个颜色。

I... ___so... don't know which color to choose.

我忘记设置闹钟，所以迟到了。

I forgot to set the alarm, ___so I was late.

这个蛋糕太甜了，我吃不下第二块。

The cake was ___so sweet that I couldn't eat a second piece.

我喜欢喝茶，他也很喜欢。

I enjoy drinking tea, and ___so does he.