1. was ( school là số ít ) ... It was ... ( it - số ít )

2. was ( weather in London là số ít ) .... It's was .. ( it => was )

3. was ( ai số ít ) ... Philip was ... ( Philip là sô ít )

4. Were ... ? ( parents số nhiều ) .. weren't ( số nhiều và vì no => weren't )

5. Were .. ( 2 người số nhiều ) ... were ( they => were )

6. Were ( atlot => were ) ... weren't ... ( no )

7. Were ( the millers số nhiều ) ... where were ( số nhiều ) ... They were .. ( they số nhiều )... rose was ill ( roes số ít )

EX5 : 

1. đổi thành câu phủ địng

She wasn't tired last night

2. chuyển thành phủ định

I wasn't in LOndon last month

chúc bạn hc tốt votr 5* và ctl hay nhất cho mh nhé