`1`. Who are you talking to`?`

`-` Mrs. Na: chỉ người `=>` dùng "who"

`-` Câu nghi vấn ( thì HTTD): (Wh-question)+ do/ does+ S+ V+...`?`

`2`. How far is it from my house to the museum`?`

`-` six kolometers: chỉ khoảng cách `=>` dùng "How far"

`-` Câu trúc: How far is it+ from+ A+ to+ B`?`

`3`. What will you do next Sunday`?`

`-` go camping: là `1` hành động `=>` dùng "what"

`-` Câu nghi vấn ( thì TLĐ): (Wh-question)+ will/ shall+ S+ V+...`?`

`4`. What should children do after meals`?`

`-` brush their teeth: chỉ hành động `=>` dùng "what"

`-` Câu nghi vấn ( modal verb): (Wh-question)+ modal verb+ S+ V+...`?`

`5`. How long did it take Mr. Hai to repair his bike`?`

`-` thirty minutes: chỉ thời gian `=>` dùng "how long"

`-` Cấu trúc: How long+ trợ+ it+ take+ sb+ to V`?`