George works three mornings a week. It hasn't been specified which week, it's a general week, or every week. Being a non-specific, indefinite noun article 'a' is correct option.

Here, 'factory' is general and unspecific. Hence, indefinite article will be used. 'A' is used because 'factory' begins with a consonant sound.

The blank will take 'an' as it is followed by a singular countable noun which represents a class of things and starts with vowel 'i'.

Here, 'doll' is a general term and no specific 'doll' is talked about. Hence, 'a' article will be used.

Indefinite article is used with singular noun. Here, 'an' article will be used because word 'image' begins with a vowel sound.

Here, sentence talks about 'police officer' as general class of people like first person's cousin. Since we are referring to general things, we need to use definite article 'a'.

Here, sentence talks about 'house' as general class of things. Since we are referring to general things, we need to use definite article 'a'.

The sentence indicates French is one of languages and refore indefinite article will be used. 'An' article will be used because 'Easy' begins with vowel sound.

'Death' and 'Country' are specific while 'great scientist' and 'great loss' are general in sentence. 'The' article is used before specific words and 'A' article is used before general words having consonant sound at beginning.

Here, 'doctor' is a general class and refore indefinite article will be used. Word after blank starts with consonant sound. 'A' article will be used.