input: Write a python function to convert all words in a sentence to uppercase.
  assert makeUpperCase('Welcome to world of python') == ['WELCOME', 'TO', 'WORLD', 'OF', 'PYTHON']
  assert makeUpperCase('hello world') == ['HELLO', 'WORLD']
  assert makeUpperCase('this is a test') == ['THIS', 'IS', 'A', 'TEST']
output: def makeUpperCase(sentence):
      return [word.upper() for word in sentence.split()]