The dean said, '' Send me a report after you have finished your volunteer work !'' A The dean ordered his students to send him a report after they have finished their volunteer work. B The dean ordered his students to send him a report after they had finished their volunteer work. C The dean told his students to send him a report after you have finished your volunteer work. D The dean begged his students to send him a report after they have finished your volunteer work. Giải thích sao bạn chọn câu đó giùm tôi luôn

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