他一边工作一边唱歌 She sang ___ the worked
问题描述：
他一边工作一边唱歌 She sang ___ the worked
答
你这句单词错了吧。the应该是she吧
She sang while she worked.
答
as
答
by
答
with
答
when.不能填while,因为while后面是she was working.
答
over