2.Answer the questions.
1) When do we use indefinite articles?
2) Which indefinite article we use before a singular noun that starts with a vowel sound?
3) Where did Jennifer buy her doll?
4) How many things were on the second shelf?
5) For what does she use her vase?
6) Where do we use a definite article?
7) Which article do we use before uncountable nouns?