谈论伟大发明及其用途 — 英语选择题
题目
In our school's Science Week, students discussed great inventions. Tom said, 'The light bulb ______ by Edison in 1879, and now it ______ in almost every home.' Choose the correct option to complete his words. A. was invented; is used B. invented; is used C. was invented; used D. invented; used