1 . I want to ________ (申请) the job of volunteering in the Music Festival because I’m addicted to music. (根据汉语提示补全句子)

2 . A simple and common method used by many consumers is to ________ (抱怨；投诉) directly to the store manager. （根据汉语提示单词拼写）

3 . Is it the ache you feel when you watch your son or daughter ___________ (消失) down the street, walking to school alone for the very first time? (根据汉语提示单词拼写)

4 . 每逢一个节日即将来临，你就能看到各种商业机构利用社交平台销售他们的产品。(take advantage of; social media) (汉译英）