( ) 3. Although he.s only 16 years old,______ he has beea college student for two years.
·but
·/
·however
·and
出自:运营管理

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