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.
It was not until the end of prehistoric times that the first wheeled vehicles appearing .
A. until the end
B. prehistoric
C. the first
D. appearing
Đáp án D
Kiến thức: It was not until...that S + thì quá khứ đơn
Appearing => appeared