Choose the underlined part A, B, C or D that needs correcting.
1. At this time last year, they build this house.
2. I was chatting with my friends while my teacher were teaching the English lesson yesterday.
3. She was painting a picture when her mother was making a cake.
4. When John, their son, was 11 years old, he was reading Shakespeare’s sonnets every night.
5. Rammy, the feline, chased mice in the garden while we were talking.
