`1.` What a comfortable bed !
`2.` What a awful day !
`3.` What a beautiful room !
`->` Cấu trúc câu cảm thán: What/ How + a/an + adj + .... !
`II,`
`1.` was walking - felt
`->` ( Một hành động đang diễn ra trong QK có một hành động khác bất ngờ xảy ra, hành động đó dùng QKĐ )
`2.` was losing - was walking ( Cấu trúc: S + was/were + V_ing + ... )
`3.` were sitting - saw ( Như câu 1 )
`4.` was having was working ( Cấu trúc: S + was/were + V_ing + ... )
`5.` was going - hit ( Cấu trúc: S + was/were + V_ing + ... )
`->` S + was/were + V_ing, when + S + V(QKĐ)