CHUYÊN ĐỀ 12: THỨC GIẢ ĐỊNH (SUBJUNCTIVE)
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It is strange that he…………so upset about such a trifle, isn’t it? A. were B. shall be C. should be D. have been

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It is strange that he…………so upset about such a trifle, isn’t it?

were

shall be

should be

have been

Giải thích

Chọn C