江湖救急啊啊 大侠们快来帮帮忙吧！ After science classes,we are so f_____

Question

横线上根据首字母填上合适的词，能使语句通顺

Answer 1

frustrated(adj. 失意的，挫败的；泄气的)
原文好像是After science classes,we are so tired（累的，疲惫的）.

Answer 2

After science classes,we are so funny.