IV. Mark the letter A, B, c or D to indicate the underlined part that needs correction in each of the following questions.
14. If you slept under a mosquito net, you weren't bitten so often.
15. Unfortunately, the catering committee can never agree between themselves.
16. We went by a train to the west of England last month.
14 weren't => wouldn't be
\(\Rightarrow\) Dấu hiệu : slept
Công thức : If+ S + Vqk đơn S + would (not) + Vnguyên thể
15 between => by
\(\Rightarrow\) Ta có cụm từ : by themselves : tự họ, bởi chính họ
16 by a => by (bỏ "a")
14. weren't => wouldn't be
15. between => by
16. by a => by