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I Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Trả lời câu hỏi dưới đây:You look exhausted. You __________ in the garden all day.  

I
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each

Câu hỏi

Nhận biết

I

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Trả lời câu hỏi dưới đây:

You look exhausted. You __________ in the garden all day.  


A.
can’t have worked hard                  
B.
couldn’t have worked hard
C.
should have worked hard          
D.
must have worked hard
Đáp án đúng: D

Lời giải của Luyện Tập 365

Đáp án là D. must have done: chắc là đã, hẳn là đã - Chỉ sự suy đoán logic dựa trên những hiện tượng có sẵn.

Nghĩa câu: Bạn trông mệt mỏi quá. Chắc bạn đã làm việc vất vả ở ngoài vườn cả ngày.

Cách dùng các từ còn lại:

Can’t / Couldn’t have done: được sử dụng khi chắc chắn rằng một cái gì đó đã không xảy ra trong quá khứ.

Should have done: đáng lẽ ra …. - được dùng để nói về những sự việc đã không hoặc có thể xảy ra trong quá khứ..

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