Bộ 5 đề thi giữa kì 2 Tiếng Anh 11 Global Success có đáp án - Đề 4

These are people (1) _________do not know they are harming themselves by their action.

12/29

These are people (1) _________do not know they are harming themselves by their action.

what

whom

which

who

Giải thích

Choose D