1.The bOY is looking for his book改为一般疑问句并作否定回答
2.Daniel and hiS friends are having some cold drinks改为否定句
3.THE boys are swimming in the river now 改为否定句
4.i am asking mr wu some questions改为一般疑问句并作肯定回答
5.my father is working on his computer in his room对 is working on his computer 提问