Ответ на вопрос: 1. Model: (+) I / wear / these jeans since winter. — I have been wearing these jeans since winter. 1. (−) Denis / play / computer games / recently. 2. (?) How long / you / wait for me. 3. (−) Oleg / read / for an hour. 4. (?) What / Anna / try on / for so long. 5. (+) They / shop / for three hours. 6. (+) My dad / work here / for ages. 7. (?) You / play chess / since 9 o’clock. 8. (+) My aunt / travel / since Easter. 9. (−) The baby / sleep / for 2 hours.