Choose the right words to complete the sentences.

Choose the correct option.

At 3 am on Friday, Diana [was|were] [writing|write] a letter to her friend.

Why [was|were] **** you [laughed|laughing] at that girl?

I [was|were] [reading|reads], and my sister [was|were] [playing|plays] the piano.

At 7 pm I [was|were] still [clean|cleaning] the house.