Complete the sentences below, with the correct form of "can" or "can't" (positive or negative).

Here are the completed sentences:

1. We can go to the shop today, if it doesn't rain.
2. You can borrow my book if you promise to return it tomorrow.
3. The baby cannot talk yet because she is too young.
4. You may not eat sweets before dinner.
5. He can play the piano very well.
6. May I sit here, please?