28.She has less flour than he has
-->He has more powder than she has
29.There are more students in my class than the are in her class
--> There are fewer students in her class than there are in my class
30.There is less water in a desert than there is in mountain
-->There isn't more water in a desert than there is in mountain
31.There are fewer singers in a small city than there are in a big city
-->There aren't more singers in a small city than there are in a big city