阅读下面短文，根据以下提示：1）汉语提示。2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确，拼写正确。
Editor,
I am certain that my teachers are good and hard-working
people, not lazy or _________（贪婪的）or unskillful, as some
American officials have declared. They arrive early, stay _________
