Thứ bảy, 23/11/2024
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Câu hỏi:

20/06/2024 103

For thousands of years, man has created sweet-smelling substances from wood, herbs and flowers and using them for
perfumes or medicine.

A. man

B. sweet-smelling

C. using them

Đáp án chính xác

D. or

Trả lời:

verified Giải bởi Vietjack

Chọn đáp án C.

using them => used them
Ở phía trước động từ đang được chia ở thì hiện tại hoàn thành has created => động từ ở sau cũng như vậy, tuy nhiên ko cần dùng has used nữa, mà chỉ cần dùng used là được.

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