Đề thi giữa kì 1 Tiếng Anh 12 có đáp án (Đề 2)

Indicate the correct answer: You __ the rules of synchronized swimming again

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

You _______ the rules of synchronized swimming again because everybody had understood everything then.

needn't have explained

can’t have explained

needn't explain

can’t explain

Giải thích

Đáp án A.