Before the invention of the printing press books have been a
Câu hỏi
Nhận biếtMark the letter A, B , C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Before the invention of the printing press, books have been all printed by hand.
Đáp án đúng: C
Lời giải của Tự Học 365
Giải chi tiết:
C => had been
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