A:spoke
B:stood
C:told
D:represented
— I'm sorry to hear that.
把一支枪水平固定在小车上,小车放在光滑的水平面上,枪发射出一颗子弹时,关于枪、弹、车,下列说法正确的是( )
It might have saved me some trouble ______ the schedule.