一般过去时与现在完成时对比 — 英语填空题
题目
用所给动词的适当形式填空：Eric ___ (create) his first website three years ago, and since then he ___ (write) more than fifty posts on it. He says the internet ___ (change) his life a lot, and last year he even ___ (teach) his grandparents to shop online.