All workers must wear protective clothing to protect himself when working on a

45/50

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.
All workers must wear protective clothing to protect himself when working on a

A B C D

construction site.

must wear

to protect

himself

When

Giải thích

Kiến thức: Đại từ

Subject (chủ ngữ) số nhiều “All workers – Tất cả các công nhân”, không thể dùng “himself”, phải đổi thành “themselves”.

Đáp án: C