a. Circle ONE mistake in each sentence:
We don’t have much tomatoes left in the refrigerator.
→ much should be many.
Corrected: We don’t have many tomatoes left in the refrigerator.

How many flour does Andy need to make these cakes?
→ many should be much.
Corrected: How much flour does Andy need to make these cakes?

There aren’t much butter in the fridge, so we need to buy some.
→ much should be many.
Corrected: There aren’t much butter in the fridge, so we need to buy some. (Corrected to much for non-countable nouns.)

How many glass of water do you drink every day?
→ glass should be glasses.
Corrected: How many glasses of water do you drink every day?

Trang adds two teaspoon of sugar to the fish sauce.
→ teaspoon should be teaspoons.
Corrected: Trang adds two teaspoons of sugar to the fish sauce.

b. Complete the questions with How much or How many:
How much jam do you need?
How much salt did you put into the soup?
How many cups of coffee would you like?
How much sugar is there?
How many slices of bread are there?
How many pieces of pizza can you eat?
How much orange juice is left?
How much tea is enough for five people?
How many eggs do you want?