1.They... students yesterday. a.am b.is c.was d.were
2.They... doctors two years ago. a.am b.is c.was d.were
3.They... farmers last month. a.are b.is c.was d.were
4.We... nurses yesterday. a.are b.is c.was d.were
5.The weather... cold yesterday. a.aren't b.isn't c.wasn't d.weren't
6.I... a pupipl last week. a.aren't b.isn't c.wasn't d.weren't
7.These hats... new yesterday. a.aren't b.isn't c.wasn't d.weren't
8.My parent... teacchers two yester ago. a.are b.is c.was d.were
9.He... a mechanic last Monday. a.aren't b.is c.wasn't d.weren't
10.... he an engineet yesterday.No he... . a.is/isn't b.aren't cwas/wasn't d.were/weren't
thanks bạn☺