The formation of new words by converting words of one class to another class is called ______. ( )

A.prefixation
B.suffixation
C.acronymy
D.conversion
出自:信阳师范学院-英语词汇学

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块