`1,` is planting ( thì HTTD , có now)
`2,` does ... do - reads ( thì HTĐ )
`3,` is - isn't working
`4,` don't go ( Thì HTĐ , có often)
`5,` are - are cooking
`6,` playing ( What about + V_ing)
`7,` is - is watering
`8,` am studying
`9,` is flying
`10,` stop
`11,` will stay - anwers
`12,` are singing
`13,` study ( used to + V(bar)
`14,` have lived
`15,` have known
`16,` reading ( love + V_ing )
`17,` have seen
`18,` Will...buy
`19,` didn't see
`20,` Have ... learnt
`21,` watching
`22,` am decoreating
`23,` buy - win ( HTĐ)
`24,` got
`25,` have taught
`26,` forget - have just told
`27,` has worked
`28,` arrived - has just gone