1.in our school there is a reading room,_____ the students o

1.in our school there is a reading room,_____ the students often go to read newspapers and
magazines.
Aat which Bwhich Cin which Dto which答案D.我觉得好像错了,想选C
2.that was the day___ we'll never forget.Aon which Bwhen Cin which D/答案是B求解释（强调句型?）
3.is this zoo___ we visited last year?Ato which Bthe one Cone Dwhere答案是D.我觉得D好奇怪,应该填which吧.visit it 另：（如果强调句型is this the zoo the one we visited last )