what is he doing not now?he is telling (goke)to us

what is he doing now What is Mr.Smith doing?He is telling the students to stop--- 3个What is the most ____ (use) to us now?He ____ (not be) fre truth 可数名词Is he telling the ( )(true)to us I am not sure.怎么填 there is no telling what he is going to do. what is he doing now?he ( )a bath.A.has B.is going to take C What is he doing what does he do now 与what is he doing now?有何区别? what is he doing ------he is p______b_______. I wany to know后面是加what is he doing 还是what he is doing? he is not free now.he is doing his homework(同义句） Look at Bob.He is tall now.He is not what he used __________