一般过去时叙述发明史 — 英语填空题
题目
Read the short history and complete it with the correct past forms of the verbs in brackets.
In 2008, Nora ___ (invent) a small reading lamp. At first, it ___ (not work) well, so she ___ (change) its design. After that, the lamp ___ (become) popular in her town.