... Exercises Unit 9-10 English 12 BUT, SO, HOWEVER and THEREFORE Exercise 1: Add so, but, therefore, however where appropriate. 1. The wind was howling outside,_________it was warm and comfortable ... however d. therefore2. I am going shopping for food this evening, ________ I do not have to go at the weekend.a. so b. but c. however d. moreover Exercises Unit 9-10 English 12 3. We live in ... she passed the exam very easily.19.It was very cold last night, we went out for a walk. Exercises Unit 9-10 English 12 20.It was very cold last week, we had to cancel our picnic.21.He was an...