`17` D

`->` Cấu trúc : This is + N(số ít) + ....

`->` Cấu trúc : Tính từ sở hữu + name + tobe + tên

`18` B

`+` She là chủ ngữ số ít nên dùng động từ tobe is và have `->` has

`->` Cấu trúc : S + be + N/adj

`+` Hình dáng `->` Màu Sắc `->` Danh từ

`19` A

`+` She là chủ ngữ số ít nên dùng động từ tobe is

`->` Cấu trúc : S + be + N/adj

`->` like(s) + V-ing : thích làm gì...

`20` B

`->` Cấu trúc : Because + S + V + (O) : Bời vì....

17. This/be/ my best friends / ./ Her name/ be/ Nga. A. This is are my best friend. Her name is Nga. B. This is my best friend. Her name are Nga. C. This am my best friends. Her name is Nga. 𝐃. 𝐓𝐡𝐢𝐬 𝐢𝐬 𝐦𝐲 𝐛𝐞𝐬𝐭 𝐟𝐫𝐢𝐞𝐧𝐝𝐬. 𝐇𝐞𝐫 𝐧𝐚𝐦𝐞 𝐢𝐬 𝐍𝐠𝐚. 18. She/ be/ tall/ have / short black hair. A. She is tall and have short black hair. 𝐁. 𝐒𝐡𝐞 𝐢𝐬 𝐭𝐚𝐥𝐥 𝐚𝐧𝐝 𝐡𝐚𝐬 𝐬𝐡𝐨𝐫𝐭 𝐛𝐥𝐚𝐜𝐤 𝐡𝐚𝐢𝐫. C. She tall because has short black hair. D. She be tall because has short black hair. 19. She/ very kind/ and/ she / like / meet/ new people. 𝐀. 𝐒𝐡𝐞 𝐢𝐬 𝐯𝐞𝐫𝐲 𝐤𝐢𝐧𝐝 𝐚𝐧𝐝 𝐬𝐡𝐞 𝐥𝐢𝐤𝐞𝐬 𝐦𝐞𝐞𝐭𝐢𝐧𝐠 𝐧𝐞𝐰 𝐩𝐞𝐨𝐩𝐥𝐞. B. She very kind anh she likes meeting new people. C. She is very kind and she like meeting new people. D. She is very kind and she likes meeting new people. 20. I/ like/ her/ because/always/ help/ me. A. I likes her because she always helps me. 𝐁. 𝐈 𝐥𝐢𝐤𝐞 𝐡𝐞𝐫 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 𝐬𝐡𝐞 𝐚𝐥𝐚𝐰𝐚𝐲𝐬 𝐡𝐞𝐥𝐩𝐬 𝐦𝐞. C. I like her because she always help me. D. I like her because always helps me.