what is he doing ------he is p______b_______.

what is he doing ------he is p______b_______. What is he doing what is he doing now Whois he What is he doing? 1.what is he doing?he is ----(read/reading)books what.is.he.doing的中文是什么意思 Little ------- about what he is doing What-------- interesting work he is doing What is he doing He's__________(writing,drawing) I wany to know后面是加what is he doing 还是what he is doing? 请教What is he doing和What he is doing的句子成分 what he is doing 和 what is he doing有什么区别?