Задание 
   Complete the grammar rules using can or can't.
Choose the correct option.
You use [can|can't] when you're able to do something.
You use [can|can't] when something is allowed.
You use [can|can't] when you aren't able to do something.
You use [can|can't] when something isn't allowed.
Match the rules above with the examples.
Write one number in each gap.
Alicia can't ride a bike, but she wants to learn how to do it. [ ]
You can go for a walk after you do your homework. [ ]
Tom can sing very well. [ ]
You can't talk during the exam. [ ]