横杠中间是要我填的,现在所填的单词是答案上抄来的,但是我还是不理解,

横杠中间是要我填的,现在所填的单词是答案上抄来的,但是我还是不理解,
1 I need some__icing___(ice)sugar to make a chocolate cake.
2 I need one__spoonful___(spoon)of chotolate powder.
3 Kathy is the tallest in her slass.(保持原句句意)
Kathy is(taller)(than)(anybody)(else)is her class.
4 Edison was a great __scientist__(science)__inventions__(invent).
5 We put the fish in a __fridged__(fridge)truck.
6 The strange object flew into the sky and__disappeared__(appear)quickly.
7 Pleas buy some __powdered__(powder)milk to make cakes.