Please state the following statements as logic expressions.
1. If it is raining, then I will bring my umbrella.
2. I will bring my umbrella only if it is raining.
3. If it is cloudy or raining, then I will bring my umbrella.
4. I will get wet only if I forget my umbrella and it is raining.
5. Umbrellas are useful if and only if it is raining.