3.Combine these sentences using: and, both … and, but, or, so, because, either … or… 7. You can look at the clothes in the shop windows. You can't go in and buy them. ->.............................................................. 8. I was tired. I went home early. ->.............................................................. 9. It is raining heavily outside. We'd better postpone our picnic. ->.............................................................. 10. The exercises are quite difficult. I'm doing quite well. ->.............................................................. 11.Math is difficult for me. I got a Math tutor. ->.............................................................. 12.Na is exhausted. She had three tests at school. -->.............................................................. 13Peter is worried. He is late for an important conference. ->.............................................................. 14.John can't go to work. He has a flu. ->............................................................................................ 15. I didn't study hard enough. I failed the Math exam. ->..............................................................