there are many kinds of classes for those__are afraid to fly

there are many kinds of classes for those__are afraid to fly There are many kinds of food… 填空：There are many kinds of movies_see. .There are many kinds of animals是什么意思 there are many kinds of i----animals kinds many there are of clouds There are many kinds of flower s---- how many kinds of poputions are there? There are many kinds of metals,___? how many kinds of pollution are there? there are many kinds of metals _________________. there are many kinds of food还是there are many kinds of foods?