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Câu hỏi:

17/06/2024 67

It is recommended that this machine ______ checked every year.

A. to be  

B. is

C. be  

Đáp án chính xác

D. are

Trả lời:

verified Giải bởi Vietjack

Kiến thức: Thức giả định

Giải thích:

Cấu trúc: It + be + adjective + that + S + (should) Vo

Các tính từ như: recommend, required, essential, vital,…

Tạm dịch: Người ta khuyên là loại máy này nên được kiểm tra định kỳ hàng năm.

Chọn C

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