1: They must do a lot of things to clean up this river
⇒ A lot of things must be done to clean up this river.
2: Professor River hasn't taught that course this semester
⇒ That course hasn't been taught this semester by Professor River.
3: They aren't painting my hourse because it is raining
⇒ My hourse isn't being painted because it is raining.
4: Millions of people read this paper everyday
⇒ This paper is read by millions of people read everyday.
5: Have they changed the date of the meeting?
⇒ Has the date of the meeting been changed?
6: My father took me to school everyday when I was small.
⇒ I was taken by my father everyday when I was small.
7: They usually change money at the bank.
⇒ Money is usually changed at the bank.
8: Someone stole my money from my purse this morning
⇒ My money was stolen from my purse this morning.
9: Nobody referred to that problem at the last meeting
⇒ That problem was referred to at the last meeting.
10: Maria has never done this kind of work before.
⇒ This kind of work has never been done by Maria before.
Chúc bạn học tốt :3
# Yurrie