Заполните пропуски словами than, as ... as, not so ... as.
1. In winter days are ... long ... in summer. 2. Chemistry is... difficult ... physics. 3.1 study English ... long ... my friend. 4. My sister is older ... I. 5. English is ... so difficult... mathematics. 6. Moscow is bigger ... Tallinn. 7. This machine is ... old ... that one. 8. The new transistor is more powerful... the old one. 9. The task of school education is ... important... that of higher education. 10. John is ... tall... his brother, but he is ... tall... his father.