What( )they doing——They( )studying.
What( )they doing——They( )studying.
What are they doing?
what are they doing
What do they doing?
They are studying hard.(感叹句)
What are — — doing?They are playing with
What are they doing?Do you think?(合并)
_ _ _(看来)they know what they are doing.三个空!
what are they doing now? They are---
英语what are they doing
what are they doing?急用!
“what can they be doing”