2 Choose the correct options. 1 I don’t think I can / could go...

2 Choose the correct options.
1 I don’t think I can / could go out tomorrow. I have to study.
2 The WiFi isn’t working so we can’t / haven’t been able to log on to the internet for two days.
3 My mum wasn’t able to / couldn’t speak English when she was a child.
4 The door wasn’t locked so we could / were able to get into the house.
5 I’m sure Sam won’t can / be able to come to the picnic next Saturday. He’s got a football match.
6 Would you be able to / Could you really play the piano when you were five years old?
7 My laptop stopped working but after I had checked all the cables I could / was able to get it working again.
8 He won’t be able to / hadn’t been able to finish his homework before the teacher arrived.