19 : he used to borrow my pen
=> my pen used to be borrowed by him
20 : he had finish his work on time
=> his work has to be finished on time by him
21 : you needn't do all the homework
=> all the homework needn't be done by you
22 : you ought to tell him early
=> he ought to be told early by you
23 : they don't use the room very often
=> the room isn't very often used by them
24 : they must widen the road to school this year
=> the road to school must be widened by them this year
25 : have you done your homework ?
=> have been your homework done by you ?
26 : did you finish your work early ?
=> was your homework finished early by you ?
27 : she has to pick fruit very early in the morning
=> fruit has to be picked very early in the morning
28 : the house was dirty because she hadn't cleaned it for weeks
=> the house hadn't been cleaned for weeks
cấu trúc passive voice / câu bị động : s + v + by o (object - tân ngữ)
nếu được thì cho tớ tlhn, 5sao và cảm ơn ạa <3
