Answer:
If you can get this professional's attention you can get where you need to go for a price.
Used to keep prisoners silent and to make temporary repairs on cars.
A person who chews the ends of their fingers
Bobby likes Jimmy but not Joe, apples but not pears, jeeps but not vans, shinny but not hockey, tennis but not squash. Who will he like, Sara or Sally?
You row in one while you float.
It rows quickly with four oars but never comes out from under his own roof. What is it?