1.I am tired.I shouldn't have stayed up so late last night.
2.Bob and I are not so close,but we go for a drink occasionally.
3.We are supposed to pick her up at the railway station.
4.It was clear to you that the person was drowning,but you didn't take action.
5.There is only 12 days left to do Christmas shopping ,including the weekend.
6.This kind of animal will die of hunger without immediate measures.