I'm not good ____是to speak 还是at speaking还是at speak

问题描述:

I'm not good ____是to speak 还是at speaking还是at speak
Chinese is easy to learn.I'm not good ____
A to speak B to speakingC at speakingD at speak

at speaking
be good at 表示“擅于”,at是介词,后接名词、代词或者动词的ing形式,所以这里用speaking.