1. Band : Simple - The subject has no modifiers.
2. Snow and sleet : Simple - There are two nouns present, but they're still a single subject with no modifiers.
3. A democratic government: Complete - The adjective "democratic" modifies the noun "government".
4. Chantal’s favourite band : Complete - The possessive indicator "Chantal's" and adjective "favourite" modify the noun "band".
5. Government: Simple - The subject has no modifiers.
6. Abdul’s friend: Complete - The possessive indicator "Abdul's" modifies the noun "friend".