选择题Is this research center the one foregin guest

Is this research center ________ we visited the modern equip Is this research center _____ you visited the modern equipme Is this research center ___you visited the modern equipment is this research center ___ the guests visited yesterday. Is this research center ___ you visited the modern equipment 英语翻译This research was conducted at the Center forNanophaseMa Bob still working in the research center? this is the one Is this research center____you visited the modern equipment Is this the research center____the foreigners visited last w Is this researsh center _______ the foreign guests visited l is this the Computer center _____ you visited last week?