Write down the word according to its definition and part of speech.(单词前面两个字母和最后一个字母已给出,请写出完整的单词。) ad_______t n. a public promotion of some product or service ap_______t n. a person who requests employment co_______t n. an official agreement between two or more people va_______y n. a job that is available for someone to start doing de_______r v. to take goods to the person as_______e v. to keep company with co_______e adj. including all the parts op_______t n. a person that you are playing against in a game av______d v. prevent from happening en_______e n. a company or business ex______d v. become larger in size re______t v. to be a member of a group of people