Why did you go back to the shop?--------I left mu friend ____therea waiting b to wait c wait d waits
问题描述：
Why did you go back to the shop?--------I left mu friend ____there
a waiting b to wait c wait d waits
答
A
答
waiting leave sb doing sth
答
A
leave sb doing sth.
留下某人一直在做什么
我把我朋友留在那里等待着.