Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P8)

(A) In early days, hydrochloric acid was (B) done by (C) heating a mixture of sodium

28/64

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction.

(A) In early days, hydrochloric acid was (B) done by (C) heating a mixture of sodium chloride (D) with iron sulface

In early days

done

heating

with

Giải thích

Đáp án : B

done -> made

To be made by: được tạo thành bởi cái gì