阅读：网络利与弊 — 英语词汇题
题目
根据句意及所给汉语提示，写出本单元核心单词的正确形式：1. Shopping online is very c________ (方便的) for people who are busy with work. 2. We should protect our personal p________ (隐私) when we surf the Internet. 3. The Internet has many b________ (好处), but it also causes some problems.