ГДЗ Англійська мова 7 клас Коста

1.Read the sentences in Ex. 6 on page 64 again and find all the examples of a/an and the. Choose the correct word to complete the rules.

We use a/an to introduce something for the first time.
We use the to talk about something already mentioned; with superlatives; if there is only one in the world; in front of first, second, etc.