One of the features of London is the number of big stores, most of them are to be found in or near the West End. A. One of the features B. number C. most of them D. to be found
Giải thích
Đáp án C.
Phải thay “most of them” bằng “most of which” để tạo sự liên kết tỏng mệnh đề quan hệ.