1 what is your thought about teenagers who dye their hair?
-> ta có cấu trúc thought about something / somebody
-> vì teenagers là danh từ chỉ người nên ta dùng who để thay thế
2 we were ( quite ) surprised that he passed the exam
-> ta có cấu trúc :
-> ng + adj + ed
3 phong advised khoa to tell her the truth
-> ta có cấu trúc advised somebody to do something : khuyên ai đó nên làm 1 việc gì đó
4 we don't know what to do to solve the problems
-> thì HTĐ
-> ta có cấu trúc dạng phủ định : S + doesn't / don't + V nguyên mẫu
-> ta có cấu trúc what to do something
5 laura wondered if she had met him before
-> câu đk loại 3