Question

Mark 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

Our nervous system has over ten (A) billions (B) nerve cells in a network covering (C) every inch of our skin and (D) organs

A. billions

B. nerve

C. every inch

D. organs

Answer 1

Đáp án A
Billions => billion (billions of + danh từ số nhiều / số lượng + billion + danh từ số nhiều)