: I really believe my letter came as a great surprise to John. A. John might be very surprised to receive my letter. B. John might have been very surprised to receive my letter. C. John mu

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I really believe my letter came as a great surprise to John.

John might be very surprised to receive my letter.

John might have been very surprised to receive my letter.

John must be very surprised to receive my letter.

John must have been very surprised to receive my letter.

Giải thích

Đáp án D

Dịch: Tôi tin chắc là lá thư của tôi sẽ là một bất ngờ lớn dành cho John.

(really believe là tin chắc nên khi viết lại dùng must have been để diễn dạt mức độ chắc chắn cao)