1) The movie wasn't exciting.
2) I wasn't at home yesterday.
3) They weren't busy last night.
4) Ann was a nurse when she was young.
5) We were hungry two hours ago.
6) You were late to school.
7) My watch was fashionable. (If it is singular)
8) This dog wasn't funny.
9) Sally and her sister were sick.
10) The shops weren't open.
11) The weather was cold.
12) She was my teacher.
13) The doctor was here.
14) They weren't in classroom.
15) Your teeth weren't clean.
16) He was in Sabah last week.
17) It wasn't big.
18) You were happy at the party.
19) Kate was with her friends.
20) The mouse was afraid of cat.
be (am - for singular I; is - for singular he/she/it; are - for plural (except Second Conditional construction) you/You/we/they) (V1/Vinf) - was/were (V2/Past Simple) - been (V3/Past Participle); possitive statement: [Subject] was/were [Predicative]; negative statement: [Subject] was not (wasn't)/were not (weren't) [Predicative]; interrogative: (Was/Was not (Wasn't))/(Were/Were not (Weren't)) [Subject] [Predicative]