II. Complete the following sentences by choosing A, B or C. 1.There was an __________ relationship between the two companies. A intense B intensify C intensive 2.I __________ locked myself out of the house. A accident B accidental C accidentally 3.The company has decided to take Nanjing as its ___________ base. A distribute B distribution C distributive 4.One of the basic needs in many __________ countries is food. A development B developing C developed 5.This river is badly by life wastes. A contaminate B contaminated C contamination 6.Nowadays, Internet _________ is a rapidly developing industry in China. A advertise B advertisement C advertising 7.Everyone should _______ his/her duty to help the company. A perform B performance C performing 8.They have offices in the ___________ heart of the city. A commerce B commercialize C commercial 9.College students can make their choices ____________ in many things. A independently B independent C independence 10.We should focus on _______ in learning English. A efficient B efficiency C efficiently