Can, could, be able to: Ability and possibility

1 When I was a child, I ______ ride a bike without help.

2 I’m sorry, I ______ come to the meeting tomorrow.

3 After several attempts, she ______ solve the problem yesterday.

4 I hope we ______ finish the project by next week.

5 There’s a lot of traffic. We ______ be late.

6 He tried hard, but he ______ lift the heavy box.

7 She ______ speak three languages fluently.

8 If you practise every day, you ______ play the piano better.

9 I looked everywhere, but I ______ find my phone.

10 You ______ use my laptop if you need it.