By the end of the 21st century scientists are discovering th
Câu hỏi
Nhận biếtMark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
By the end of the 21st century, scientists are discovering the cure for the common cold.
Đáp án đúng: C
Lời giải của Tự Học 365
Giải chi tiết:
Thì tương lai hoàn thành dùng để diễn tả một hành động hay sự việc hoàn thành trước một thời điểm trong tương lai.
Công thức: S + will + have + P.P.
Sửa: are discovering => will have discovered
Tạm dịch: Các nhà khoa học sẽ tìm ra cách chữa các loại cảm lạnh thông thường trước cuối thế kỷ 21.
Chọn C
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