Studies have shown _______ teenagers often suffer from depression. [

A、 ] which [

B、 ] in which [

C、 ] that [

D、 ] in that
出自:阿坝师范学院大学英语

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