I Choose the correct form of the words to complete the following sentences. 1. advertise, advertisement, advertising a. Nowadays, Internet _________ is a rapidly developing industry in China. b. Many fashions are _________ on the website. 2. perform, performance, performing a. Some software programs have a very powerful ____________ . b. Everyone should _______ his/her duty to help the company. 3. commerce, commercialize, commercial a. They have offices in the ___________ heart of the city. b. Steven planned to carry on a small amount of _________ with his friends. 4. independently, independent, independence a. Most governments realize that national economies aren’t ___________ of each other. b. College students can make their choices ____________ in many things. 5. efficient, efficiency, efficiently a. We should focus on _________ in learning English. b. Jacky is an _______ scholar who published several important papers last year