I’m sure that they had practiced hard for the games as they won a lot of medals.
A. They couldn’t have practiced hard for the games as they won a lot of medals
B. They must have practiced hard for the games as they won a lot of medals
C. They shouldn’t have practiced hard for the games as they won a lot of medals
B
Kiến thức về câu với cụm khiếm khuyết hoàn thành để suy đoán
Must have Ved-3 :chắc chắn , ắt hẳn đã gần nghĩa nhất với câu gốc
I’m sure that they had practiced…(Tôi chắc rằng họ đã…..)
Chọn B
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