Choose the correct word order in sentences with inversion.

Choose the correct option.

So [she was happy|happy she was], that I couldn't tell her the sad news.

[Had we known|We had known] about his problems, we wouldn't have asked him for help.

I always take the aisle seat on the plane. [So does Adam|Adam does so]!

Nowhere [we could find|could we find] Rob. He seemed to completely disappear!