【正文】
B. to make C. made D. make 2. Do you think the light bulbs were invented _____? –No, I don’t think so. A. by mistakes B. by mistake C. for mistake D. with mistakes A B 1. 電拖鞋是什么時候發(fā)明的? When _____ the electric ________ invented? 2. 它們是由誰發(fā)明的? ______ were they invented ______? 3. 媽媽加了鹽,但它仍然不夠咸。 Mom added salt but it still wasn’t _____ _______. were slippers Who by salty enough over the history of chips in 2a 2b and write a short essay about it. for the invention of tea by the Inter or reading the books. Then copy the information on paper.