Was/ wasn't -был/не был - употребляется только с единственным число - I,He,She,It
Were/weren't -были/не были - употребляется только с множественным числом - You,We,They
А. were
B. was
A. weren't, were
B. was
A. was
B. wasn't, was
A. were
B. weren't, were
A. was
B. wasn't, was