用所给词的适当形式填空。

1. The old man saved his money ______(buy) a colour TV.

2. You should be ______ (care) when you use credit cards to buy things online.

3. It's important ______(learn) a foreign language.

4. Don't forget ______(turn) on TV when it's time for the weather report.

5. We went to the cinema ______ (with) Lily, because she was ill.