Question

It seemed everybody ____ enjoying themselves.​

Answer 1

Answer:

It seemed everybody was enjoying themselves.

______________________________.

As 'seemed' (V2) is used earlier in the sentence, we'll use V2 form of be to fill the blank, which is 'was'

______________________________.

Answer 2

Answer:

It seemed everybody was enjoying themselves.

Explanation:

So, was is your right answer.

Hope it will help you