is this museum____some French fridens visited last week

Is this museum____some French fridens visited last week? is this museum____some French fridens visited last week IS this museum____some German friends visited last wednesday Is this factory____you visited last week? Is this factory ______you visited last week? This is the factory where we visited last week. Is this the factory _____ we visited last week? Is this museum____you visited with your parents last week? Is this factory ______you visited last week?为什么选C 【选择】28.Is this museum（ ）you visited last week? This school is （） some German friends visited last week. 选择 is this the city _____he visited last week?