Identify the plural noun in this sentence: 'The dog barks.'

Convert the singular noun 'child' to plural.

What is the plural form of 'mouse'?

Identify the singular noun in this sentence: 'The birds are singing.'

Convert the plural noun 'geese' to singular.

What is the singular form of 'books'?

Identify the plural noun in this sentence: 'The flowers bloom.'

Convert the singular noun 'leaf' to plural.

What is the plural form of 'tooth'?

Identify the singular noun in this sentence: 'The cars are fast.'

Convert the plural noun 'men' to singular.

What is the singular form of 'cities'?

Identify the plural noun in this sentence: 'The apples are red.'

Convert the singular noun 'foot' to plural.