Yesterday at 1 p.m. the following people were in the middle

Yesterday at 1 p.m. the following people were in the middle of an action. Choose the correct past continuous sentence which is formed from the words given.

1. we / read / a book about America
We were readding a book about America.
We were reading a book about America.
We was reading a book about America.


2. Dana and I / wait / in the park
Dana was waiting in the park.
Dana and I were waiting in the park.
Dana and I were waitting in the park.


3. Mister Miller / teach / chemistry
Mister Miller were teaching chemistry.
Mister Miller was teaching chemistry.
Mister Miller was not teaching chemistry.