I’m certain Luis was on top of the world when his wife gave birth to their first child.

Chọn một phương án bên dưới để kiểm tra đáp án ngay:
Đáp án chính thức: B
Hướng dẫn giải chi tiết
(AI giải đề cho tôi)
Câu gốc: 'I'm certain Luis was on top of the world...' diễn tả sự suy luận chắc chắn về quá khứ, nên dùng 'must have + V3' (must have been). A sai vì 'must be' là suy luận ở hiện tại; C sai vì 'could have been' chỉ khả năng đã xảy ra nhưng không chắc chắn; D sai vì 'may be' là suy luận hiện tại và 'very on top of the world' không đúng ngữ pháp. Đáp án B khớp: 'must have been on top of the world when his wife gave birth...'. Khớp đáp án nguồn (Câu 34 = B).
Câu hỏi này trích từ đề thi chính thức:

Đề Thi Thử THPT Quốc Gia Lần 1 Tiếng Anh 12 THPT Nguyễn Viết Xuân Sở GD&ĐT Vĩnh Phúc 2019-2020 (Mã Đề 104)

50 câu hỏi•Thời gian 60 phút•Chấm điểm & giải thích chi tiết

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