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Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
………. all the papers already, Sarah put them back in the file.
A. To have photocopied
B. to photocopy
C. Photocopying
D. having photocopied
………. all the papers already, Sarah put them back in the file.
A. To have photocopied
B. to photocopy
C. Photocopying
D. having photocopied
Kiến thức: Phân từ hoàn thành
Giải thích: - Having+ VPii
Giải thích: - Having+ VPii
Đáp án D.