在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
He wasn’t here, but____________(显然)it was a good party.
__________(既然) everyone is here, we begin our lecture.
Thunder often__________(伴随) lightning.
The boys ___________(自己取乐) by drawing pictures.
Your idea isn’t based on facts, so it is __________(主观的).
This street____________ a hero in the First World War.
Smoking is strictly ______________(禁止) at school.
He was __________(确信) that his theories were correct.
Equal treatment for all is guaranteed in this area,___________ race, religion or sex.
A major problem of this area is the ________(缺乏) of water.