Heworksinafactorynow,buthe
问题详情：
He works in a factory now, but he _____ on a farm for 20 years. A. worked B. has worked C. had worked D. had been working
【回答】
A
知识点：一般过去时及其被动式
题型：选择题
问题详情：
He works in a factory now, but he _____ on a farm for 20 years. A. worked B. has worked C. had worked D. had been working
【回答】
A
知识点：一般过去时及其被动式
题型：选择题
