she is a singer.she is good at （） A\singing B\to singing C\sings D\sang
问题描述：
she is a singer.she is good at （） A\singing B\to singing C\sings D\sang
我知道be good at 擅长,那么他后面接什么我不知道.一一分析下
答
选A
be good at doing something.擅长做某事