帮我改下定语,没错的不改.Correct the errors,if there are any,in the following sentences.

帮我改下定语,没错的不改.Correct the errors,if there are any,in the following sentences.
1.The hotel where I stayed when I went sightseeing in Chicago during
the summer vacation is rather poorly managed.
2.The speed a that light travels is said to be the maximum one in the
universe.
3.This is the most important position which has ever been offered to a
graduate from the college.
4.The woman for who he was waiting came from Canada.
5.He would eat the fruit must climb the tree.
6.I have many friends,some of which are poets.
7.She is going to spend the summer holidays in New York,which she hass
some relatives.
8.Our two countries are neighbors which friendship is of long
standing.
9.All which has to be done is to press the button.
10.The farmer used wood to build a house which to store grain.