The measurement unit known as a “foot” has originally based on the size of the human

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Mark the letter A, B, C, D on your answer sheet to show the underlined part that needs correction

measurement

has

size

foot

Giải thích

Đáp án B

Chuyển thành bị động: has --> was.

Theo từ điển oxford, BASE - [usually passive] base somebody/something/yourself in… to use a particular city, town, etc. as the main place for a business, holiday/vacation, etc.

- Base (t.v) – Luôn luôn dung ở dạng bị động