How much flour is/are there? How many bananas is/are there? How much cheese is/are there? How many watermelons is/are there ? How much butter is/are there? How many mangoes is/are there?
1.are 2.is 3.are 4.is 5.are
Is are is are is are flour-мука является неисчислимым, поэтому не может быть are
bananas —бананы, их много поэтому are.
cheese_сыр, не исчисляемый, поэтому is