Translate to first-order logic:

1. No one speaks French. (Note: you can take \emph{speak French} as a single lexical item. But, if you like, try to take the two words separately.)
2. No one speaks French or Arabic.
3. Every student is happy.
4. Every student is happy and tired.
5. Every student is happy, and every student is tired.
6. Every student is happy or tired.
7. Every student is happy, or every student is tired.