Fill in the blanks with the most suitable word from the given options.

Some of the cubs were very naughty and ________ zookeeper found it extremely difficult to tame them.

The correct answer is: the.

Key Points

• The article 'the' is used to specify a particular thing.
  • For example: This is the book I was talking about.
• Similarly, in this question, the sentence talks about a specific zookeeper who found it difficult to tame the cubs.
• Hence the definite article "the" is the most appropriate choice.

Correct sentence: Some of the cubs were very naughty and the zookeeper found it extremely difficult to tame them.

Additional Information

• Articles are used to indicate whether a noun is specific or unspecific.
• "The" is a definite article used to refer to a specific noun that is known to the reader or listener.
• "A" and "an" are indefinite articles used to refer to non-specific nouns.