Відповіді: Стр.81 (2)

2. Study the examples in Ex. 1. Then match 1–4 with a–d to make sentences about the present perfect.

1–d; 2–a; 3–c; 4–a.

1. To talk about something which happened a very short time ago, (d) we use the present perfect with just.

2. To talk about something which we expect to happen in the future, (a) we use the present perfect negative with yet.

3. To talk about something which happened not long ago, or sooner than someone expected, (c) we use the present perfect with already.

4. To ask about something which we expect to happen in the future, (a) we use the present perfect negative with yet.