Rewrite the sentences of comparison

REWRITE THE SENTENCES OF COMPARISON ./1 - Her old house is bigger than her new one .-> HER NEW HOUSE IS SMALL THAN HER OLD ONE ................... / 2 - no one in my class is tallest person than PETER .-> PETER IS THE TALLEST PERSON IN MY CLASS .................   /3 - the black dress is more expensive than the white one .-> THE WHITE DRESS IS CHEAPER THAN THE BLACK ONE .............. /4 - according to me , ENGLISH is easier than MATHS .-> ACCORDING TO ME , MATHS IS MORE DIFFICULT THAN ENGLISH ............/ 5 - no one in my group is more intelligent than MARY-> MARY IS MY GROUP IS MOST INTEELIGENT IN MY GROUP ............. /6 - no river in the world is longer than the NILE .-> THE NILE IS THE LONGEST RIVER IN THE WORLD .............../ 7 - Mount Everest is the highest moutain in the world .-> NO MOUNTAIN IN THE WORLD IS HIGHER THAN MOUNT EVEREST ...........