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
______he was poor himself, he tried his best to help the people in need.( )
A.BecauseB.ThoughC.After
The last BeiDou navigation satellite (北斗卫星导航) successfully last month.( )
A.was sent upB.sent up
C.has sent up
On the phone her father asked her then.( )
A.what was she doingB.what she was doing
C.when she was doing
That be Mary. She has gone to Changsha on business. ( )
A.can'tB.mustC.may
wonderful the movie is! I want to see it again. ( )
A.HowB.WhatC.What a