Choose the correct answer

3.Our hometown is ................. place in the world
A.more beautiful        B.beautifuller         C.the most beautiful          D.the beautifulest
4................ doing morning exercises is good for your health , don't do it too hard
A.When          B.If                C.But             D.Although
5.Odd one out :
A.rubbish         B.floods         C.litter          D. garbage