`1,` Is she walking
Is/Am/Are + S + V-ing + ...?
`2,` Am watching - is - is running
S + is/am/are + V-ing + ... .
S + V(s/es) + ... .
`3,` Are they makingGiống câu `1`
`4,` Are trying - is biting - aren't liking
Giống câu `1` và `2`
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( •ω• ) ( •ω• ) Oriana
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