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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. Trả lời câu hỏi dưới đây:When______ is not known.

Mark the letter A, B, C or D on your answer sh

Câu hỏi

Nhận biết

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:

When______ is not known.


A.
it was invented the wheel
B.
the wheel was invented
C.
the invention of the wheel
D.
was the wheel invented
Đáp án đúng: B

Lời giải của Luyện Tập 365

Ta thấy đây là một câu khẳng định chứ không phải là một câu hỏi. Câu này có nghĩa là: "Thời điểm mà bánh xe được phát minh thì không được biết đến/ không rõ."

-> B là đáp án đúng.

When the wheel was invented is not known.

Trong đó: when the wheel was invented là chủ ngữ, is not known là động từ.

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