5 Choose the correct item
1.I have to/must pay attention in class. I'm obliged to.
2.Jane must/had to go to the bank yesterday. She needed some money.
3.We don't need to/mustn't go to school today. It's sunday.
4.You shouldn't/mustn't touch that. It's forbidden.
5.He couldn't/wasn't able to speak english when he was 8.
6.You wouldn't/shouldn't download films illegally.
7.Could/Shall I have a glass of water, please?
8.Shall/Must I help you send this email?
9.Karen could/was able to connect to the internet yesterday.
10.Mary would/might come to the party, but she isn't sure yet.