`1.` went
`2.` got
`3.` did go
`4.` didn't go
`5.` had met
`6.` didn't buy
`7.` did leave
`8.` did do
`9.` have begun
`11.` wasn't
`12.` wore
`13.` were
`14.` Did - go
`16.` goes
`18.` didn't come
`20.` bought
`21.` did left
`->` Công thức thì QKĐ:
Động từ thường:
`(+)` `S` `+` $V2/ed$ `+` `O`
`(-)` `S` `+` `didn't` `+` $V_inf$ `+` `O`
`(?)` `Did` `+` `S` `+` $V_inf$ `+` `O`
Động từ Tobe:
`(+)` `S` `+` $was/were$ `+` `O`
`(-)` `S` `+` $was/were$ `+` `not` `+` `O`
`(?)` $Was/were$ `+` `S` `+` `O`
