1 I’m sorry, you’re in my light. I __CAN’T___ see what I’m doing.
2 It was a huge hall and we were at the back, so we _COULDN’T_ hear very well.
3 When she screams, you __CAN’T__ hear her all over the house.
4 She was phoning all the way from Singapore, but I __COULD___ hear her very clearly.
5 __CAN/COULD__ you hear me at the back?
6 Put your hands up if you __CAN’T/CAN__ hear me.