Tim looks so frightened and upset. He _______ something terrible
A. must experience
B. ought to have experienced
C. should have experienc
D. must have experienced
Kiến thức: Cấu trúc phỏng đoán
Giải thích:
- Phỏng đoán ở hiện tại: must + Vo: chắc hẳn là
- Phỏng đoán ở quá khứ: must + have + V.p.p: chắc hẳn đã làm gì
- should + have + V.p.p: nên làm gì nhưng đã không làm
- ought to + have + V.p.p: cần làm gì nhưng đã không làm
Tạm dịch: Tim trông rất sợ hãi và buồn bã. Anh ấy chắc phải đã trải qua một cái gì đó khủng khiếp.
Chọn D
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