chuyển các câu sau thành câu bị động
C1 : he often listen to rook music
C2 : Peter studiens music at school
C3 : she saw many in trees ting poriraits in that are gallery
C4: Yesterday they watched a horror frem
C5 : he painted this picture 5 years ago
C6 : we visited Ha Long Bay last summer
C7: I ate bread for breakfast this morning
C8 : she often heeps his brother will with his homework