Răspuns :
Răspuns:
1 has to go
2 hasn't to go
3 has to stand up
4 hasn't to sing
5 have to switch off
6 has to study
7 hasn't got to study
8 have to take
Explicație:
1. has to go
2. doesn't have to go
3, has to stand up
4. doesn' have to sing
5. have to switch