Each of the following sentence has a mistake in the relative clause. Find the mistakes and correct them. Don`t change the punctuation of the sentence.
  1 the thing which I value it the most is my grandmather s necklace.
  2 he explaned all what his father had told him to do
  3 that s the house where I used to live in
  4 Whose does this book belong to?
  5 I can do everything what you can.
  6 I eant to go to Waless, where my grandfather was born there.
  7 students which want to go on the trip should sign up now.
  8 anyone who he  wants to return by bus must pay 5.00$
  9 Alison is someone whom I think would do the job well
  10 the girl, that I d seen before in the restaurant, was dressed in black.