D分析：改为by，见到v+ed，就要想被动，想到by，介词也是常考项目

D分析：改为by，见到v+ed，就要想被动，想到by，介词也是常考项目，注意。

Kết quả (Anh) 1:

D analysis: replaced by, see v+Ed, passive, thought of by, prepositions are often projects, attention.

Kết quả (Anh) 2:

D Analysis: changed by, saw v + ed, and finding passive, thought by, the preposition is often test project, attention.

Kết quả (Anh) 3:

D analysis: to by, see the ED V, you want to be passive, think of by, the preposition is often an examination project, attention.