Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
A person’s ability to communicate （ ） via e-mail depends highly on his or her writing skills. (effective)
【正确答案】：EFFECTIVELY
【题目解析】：
根据前文动词communicate，空格处应该填副词来修饰动词，effective的副词形式是effectively有效地，且符合句意。句意：一个人通过电子邮件进行有效沟通的能力在很大程度上取决于他或她的写作能力。