1.
(-) He wasn't planting trees in the garden yesterday.
(?) Was he planting trees in the garden yesterday ? No, he wasn't.
2.
(-) They weren't working when she came yesterday.
(?) Were they working when she came yesterday ? No, they weren't.
3.
(-) She wasn't painting a picture while her mother was making a cake.
(?) Was she painting a picture while her mother was making a cake ? No, she wasn't.
4.
(-) Anne wasn't riding her bike to school when Peter saw her yesterday.
(?) Was Anne riding her bike to school when Peter saw her yesterday ? No, she wasn't.
5.
(-) He wasn't typing a letter when his boss went into the room.
(?) Was he typing a letter when his boss went into the room ? No, he wasn't.
