1.The day _____she spent with us was never to be forgotten .
A./ B.on which C.when D. in which
2.the day ______she played with us was never to be forgotten .
A.that B.when C.which D./
3.this is the factory _____you visited last week.
A.where B.which C.to which D.in which
怎么选啊,教教我。