I had to work last Sunday because I ____ to write an article

I had to work last Sunday because I ____ to write an article 23.I couldn`t go to sleep last night because I had a (an)___ 八上英语选择题：I found ( ) hard to write an article(文章) in English. I went Yunnan last Sunday,because I wanted to see my aunt.I ____ an answer,I decided to write him again. I would love to go to the party last night but I had to work I went to bed very late because I had_____ work to do last n Last Sunday,I had a great time.I went to the countryside wit I ___ to the party last night,but i had to work extra hours To write an article,you should How to write an article's abstract? write an article to describe your school