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Câu hỏi:
More than 40 patterns on silicon surfaces _______ with that paintbrush so far.
- A. printed
- B. were printed
- C. have printed
- D. have been printed
Lời giải tham khảo:
Đáp án đúng: D
Dấu hiệu: so far ⇒ thì Hiện tại hoàn thành (S + have/has + V-ed/V3)
Công thức bị động: S + have/has been + V-ed/V3
More than 40 patterns on silicon surfaces have been printed with that paintbrush so far.
Dịch: Hơn 40 mẫu trên bề mặt silicon đã được in bằng cọ vẽ đó cho đến nay.
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