一般过去时否定句 — 英语填空题
题目
Lingling is talking about her grandpa. Before, he was a bus driver, but he ___(be not) a teacher. Ten years ago, her grandma and grandpa were farmers, but they ___(be not) doctors. Now her grandpa isn't a driver and her grandma isn't a farmer. 用 was not / were not 的缩写形式填空，使句子正确。