77. The worst part of the divorce was the _______________ (分离) from his three children.

I. 单词拼写: 根据所给句子及横线后的汉语意思写出正确形式的单词。(共5小题；每小题1分，满分5分)

76. An international effort is required to cope with the _______________ (紧急) needs of the earthquake victims.

35. - How could you make such a silly mistake?

- I’m sorry. I ______ it before I handed in the paper.

A. should check　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. could check　　　　　　　　　　

C. must have checked 　　　　　　　　　　　　　　　　　　　 D. ought to have checked