单项选择题
Before she began to study at Beijing University, she（）in a factory for five years.
A.had worked B.worked C.has worked D.would work
单项选择题 Those cakes look nice. Can I have（）?
单项选择题 I'm in Greece at the moment. I like the weather（）.
单项选择题 Did you have a neighbor who was always（）your business?
