4, The students were told about that by Daisy

5, Some cultural activities was organized in the village by them

6, A big cake was made by my sister

7, These flowers were watered this morning by them

8, My suit was brushed this morning by this woman

9, Their bicycles have been left in the hall

10, The kitchen was cleaned last night by them

11, Those maps are kept on the shelves for reference

12, English is spoken all over the world

13, Honda cars is made in Japan by them

14, A ticket was gaven to my little sister by them

Test 2:

1, Football is played all over the world

2, I was informed about the news by them

3, Library cards is issued to the readers at the beginning of the year by them

4.The students were told about that by Daisy

5.Some cultural activities were organized in the village by them

6. A big cake was made by my sister

7.These flowers were watered by them this morning (Trong câu bị động by + O luôn đứng sau adverbs of place (trạng từ chỉ nơi chốn) và đứng trước adverbs of time (trạng từ chỉ thời gian) )

8. My suit was brushed by this woman this morning

9.Their bicycles have been left in the hall

10.The kitchen was cleaned last night

11, Those maps are kept on the shelves for reference

12, English is spoken all over the world

13, Honda cars is made in Japan by them

14, A ticket was given to my little sister by them

Test 2:

1. Football is played all over the world

2.I was informed about the news by them

3.Library cards is issued to the readers at the beginning of the year

=> Những chủ ngữ không xác định chúng ta có thể bỏ qua như: by them, by people…