Đề kiểm tra giữa kì 2 Tiếng anh 12 năm 2023 có đáp án (Đề 11)

By the end of the 21st century, scientists are discovering the cure for the common cold.

5/40

Mark 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.

the end of

21st century

are discovering

for

Giải thích

Chọn C