Chuyển câu sau sang bị động

chuyển câu sau sang biij động  lớp 7  câu 1 my father water thí flower every morning  , CÂU 2 john invited Fiona to his birthday party last night ,Câu 3 her mother preparing the dinner in the kitchen ,Câu 4we should cleam our teeth twice a day,câu 5 our teachers have explained the english grammar ,câu 6 some drunk drivers caused the accident the accident in this city câu 7 tom will visit hí parents next month ,câu 8 the manager didn't phone the secretary this morning ,câu 9 did mary wear this beautiful dress  ,câu 10 I won't hang these old pictures in the living room ,câu 11 The German didn't build thí factory during the second world war