何以笙箫默cut大学全部:A surgeon works ______an operation is needed.

A surgeon works ______an operation is needed. A surgeon works ______an operation is needed. My father is a surgeon,_works in a hospital. My father is a surgeon,_works in a hospital. my father works in a f_ct _ry . the civil, building and A&A works 翻译 You can ____ a plicemen ____ ____ at any time Who works one day a day every year? Miss liu works in a shop 的同义句是什么? This person works in a library (他是什么职业）？