Is__some foreign professors visited last week

Is__some foreign professors visited last week 全国英语竞赛初三Is this reseach the foreign guests visited last week Is this factory____you visited last week? last week we visited our aunt. Is this factory ______you visited last week? Is _____some German friends visited last week? Is this factory __________some foreign friends visited last Is this factory ___some foreign friends visited last Friday? 1.IS this the exhibition___the foreign visitors visited last is this research centre _____the foreign guests visited last Is this factory _____some foreign friends visited last Frida Is this factory ___ some foreign friends visited last Friday