Fill in the blank with article : __ child must respect his parents.

Answer: a

Explanation: Articles are of two main types: indefinite (a, an) and definite (the). Choose the indefinite article when making a general statement.

• Use 'a' before words that begin with a consonant sound (for example, 'a book', 'a child').

• Use 'an' before words that begin with a vowel sound (for example, 'an apple', 'an hour').

• Use 'the' when referring to a specific or previously mentioned person or thing; it is not used for general statements.

The word "child" begins with the consonant sound /tʃ/, so the correct indefinite article is 'a'.

Correct sentence: A child must respect his parents.