15000 bài tập tách từ đề thi thử môn Tiếng Anh có đáp án (Phần 1) (Part 7)

An increased number of city dwellers has made the obsolete infrastructure worse and required a lot of repairs in these days. A. obsolete infrastructure B. has made C. required D. repairs

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An increased number of city dwellers has made the obsolete infrastructure worse and required a lot of repairs in these days.

obsoleteinfrastructure

hasmade

required

repairs

Giải thích

Đáp án B

Has made => have made vì chủ ngữ A number of + danh từ là chủ ngữ số nhiều