Misc: What sea does the Danube river flow into?

Questions

General Knowledge : Although it doesn't sound like a dog, ____dust is ornamental wood chips often placed in flowerbeds.?

General Knowledge : Chicago Transit Authority is now known as which group?

General Knowledge : If you drive on a parkway, you park on a _______?

General Knowledge : To refuel your car you go to a ___ station.?

General Knowledge : Wedding rings are normally worn on what finger of your hand?