The light in his office is still on.I wonder _______.
Maybe at midnight again.( )
A.if will he stop working
B.if he will stop working
C.when will he stop working
D.when he will stop working
The light in his office is still on.I wonder _______.
Maybe at midnight again.( )
A.if will he stop working
B.if he will stop working
C.when will he stop working
D.when he will stop working