Using eight eights and addition only, can you make 1000?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Move three sticks of the spiral below to form a square.

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.