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Câu hỏi:

14/07/2024 111

The country has vaccinated 70% of its population since the first vaccines _______ .

A. had been produced

B. have been produced

C. were produced

Đáp án chính xác

D. are produced

 Xem lời giải

Trả lời:

verified Giải bởi Vietjack

C

Giải thích:

Kiến thức về sự phối thì

Cấu trúc với since: HTHT since QKĐ, hoặc Since QKĐ, HTHT.

Tạm dịch: Cả nước đã tiêm vắc xin cho 70% dân số kể từ khi lô vắc-xin đầu tiên được sản xuất.

→ Chọn đáp án C

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World leaders love to present trees as the answer to our climate change woes. Earth has room for another

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