I found the classroom empty

In the dark empty street I found [ ]. the classroom is empty.I think they( )to the library. I found the classroom ___ ___up i found the box is empty?/i found the box empty?中间要is 吗 O(∩_ I entered the classroom,I found some students_____ (watch )T I found a boy _____at the back of the classroom ＿＿Kangkang,the classroom is empty The classroom is almost empty,where is（ I found the boy < > when i walked into the classroom括号里填draw i got to the classroom first this moring .I found the door__ When i came back,I found nobody_________.It was empty. Where I en_____ the classroom ,I found nobody except Tom单词拼写