Exercise 3
1. a good idea: ý kiến hay
--> They think that I should/ ought to do voluntary work.
should/ ought to + V: nên
2. insist: nhấn mạnh
--> They make me come home at 9 o'clock every night.
make somebody do something: khiến ai làm gì
3. important: quan trọng
--> We must do well at school.
must + V: phải làm gì
4. necessary: cần thiết
--> I don't have to agree with everything my parents say.
not have to + V: không cần
5. let somebody do something: để ai làm gì, forget + to V: quên
--> My parents remind me to do my homework.
remind somebody to do something: nhắc nhở ai làm gì
