we just chosen a ring when a man with a gun came in. After the robber had taken bob's wallet, he demanded the ring. I had just handed it to him when the alarm started to go off, and the robber ran off. we were so relived!
But the sales assistant told us we have to pay for the ring because i had given it to the robber. we had just told her that we wouldn't pay for it when the police arrived and arrested us.