2.2 Choose so, because, but, although to complete the sentences below.1. We couldn't find a taxi,_____we walked home.2._____ it was very cold, she wasn't wearing a coat3. I woke up _____there was a noise.4. I called him _____his mobile was turned off.5._______she's very nice, she doesn't have many friends.6. There was nothing on TV,__I went to bed.7. All the cafes were full _____it was a public holiday​