Translating the sentences below with the following verbs- conocer, querer, poder, saber.

1. I failed to finish the book on Wednesday.
2. Ines found out last week that Vicente is divorced.
3. Her girlfriends tried to call her, but they failed to.
4. Susana met Alberto's parents last night.
5. The waiters managed to serve dinner at eight.
6. Your mother refused to go to your brother's house.