3. Complete the following sentences with a/an, the or no article. (§ 10) 1. Tom is little boy. 2. Tom is little. 3. Bob and Tom are friends. 4. Where is red ball? – It's in kitchen. 5. I have got red ball. ball is big. 6. Mr Black was in Russia last year. 7. I have got aunt. She has got nice rabbit. 8. They have got friends in Great Britain. 9. different animals live in Africa. 10. Have you got pet?

Explanation:

This exercise focuses on the correct use of articles (a, an, the) and the omission of articles (no article). The rules depend on whether the noun is singular or plural, countable or uncountable, and whether it is specific or general.

1. 'little boy' is a singular countable noun. Since it's the first mention and not specific, we use 'a'.
2. 'little' here modifies Tom directly and is used predicatively, implying his general state or characteristic. No article is needed before 'little' when it functions as a description of a person's state.
3. 'friends' is a plural noun. When speaking generally about friends, no article is used.
4. 'red ball' is singular countable. The first mention is general, so 'a'. 'kitchen' is a singular countable noun used in a general sense of location ('in the kitchen' is standard).
5. 'red ball' is singular countable, but 'ball' here refers to the *specific* red ball mentioned in the previous sentence. So, 'the'. 'ball' in the second part of the sentence refers to the same specific ball.
6. 'Russia' is a country name and typically doesn't take an article. 'last year' is a time expression that doesn't need an article here.
7. 'aunt' is a singular countable noun. The first mention is general, so 'an' because 'aunt' starts with a vowel sound. 'nice rabbit' is a singular countable noun, first mention, so 'a'.
8. 'friends' is plural, and when referring to people in a general location, 'in' is used without an article. 'Great Britain' is a proper noun for a country and takes 'the'.
9. 'different animals' is a plural noun used in a general sense. 'Africa' is a continent name and does not take an article.
10. 'pet' is a singular countable noun. When asking generally if someone possesses a pet, 'a' is used.