Exercise 1: Choose the best answer: 1) The food didn’t look appetizing;____________, many people liked enjoying it. A. therefore B. so that C. however D. although 2) It was already 6p.m, _____________ we closed our office and went home. A. therefore B. but C. however D. so 3) Ok! you can take Chemistry as your major. ______________, you should remember that it is not easy to learn. A. Therefore B. But C. However D. Although 4) _________________ he had to take her mother to the hospital, he still attened our party yesterday. A. Because B. In spite of C. Because of D. Although 5) ______________ it got dark, they stopped working. A. Because B. In spite of C. Because of D. Though