there are some knives in the pencil-box.变否定句、一般疑问句并作肯定和否定回答,
问题描述:
there are some knives in the pencil-box.变否定句、一般疑问句并作肯定和否定回答,
答
there are some knives in the pencil-box.变否定句、一般疑问句并作肯定和否定回答,