题目内容：

根据汉语及首字母提示写出单词的正确形式,每空限填一词。

1.The professor is i_______ (教导) him to write a science report.

2.Yesterday we s_______ (怀疑) that he was involved in the murder.

3.It is generally agreed that play is an e_______ (必要的) part of a child's development.

4.Shopping online is a c_______ (方便) for people who are too busy to shop.

5.Our company provides many training o_______ (机会) for its employees.