`1`. How much milk does this child drink a day?

`->` How much + N-không đếm được?

`->` HTĐ: Do/Does + S + V-inf?

`2`. What were they fond of doing yesterday?

`->` S + fond of + V-ing: thích làm gì

`->` QKĐ: Was/Were + S?

`3`. How long will they stay at the birthday party?

`->` How long + will + S + V-inf?

`4`. What have you lost on your way home?

`->` What...?: Cái gì?

`->` HTHT: Have/Has + S + V-pII?

`5`. I wish I had met them at the party.

`->` Câu ước ở quá khứ: S + wish(es) + S + had + V-pII