A new study finds out that a kid can learn without_____ _what he is doing.

A、realize

B、realized

C、realizing

D、to realize
出自:大学英语D252

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