Giúp em với em cảm ơn ạ

=>

6. This is the most wonderful waterfall I've ever seen.

-> this is the most adj S have/has ever V3/ed

7. You mustn't make noise in the library.

-> mustn't V: không được phép làm gì

8. What is the height of Mount Everest?

-> the N of

9. Mr. Edward is the cleverest (person) in the office.

-> so sánh nhất the adj-est

10. How about going to Ha Long Bay this weekend?

-> how about Ving? (đề xuất, gợi ý)