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What happened in New York were a reaction from city workers, including firemen and policemen who had been laid off from their jobs.

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What happenedinNewYorkwere a reaction fromcity workers, includingfiremen and policemenwho had been laidoff from their jobs.

(A) What happened

(B) Were

(C) Including

(D) Their

Giải thích

Chọn đáp án B ⇒ was

Giải thích: chủ ngữ là mệnh đề danh ngữ what S V ⇒ Động từ chia số ít