1.i'm tired. i shouldn't have stayed up so late last night.
2.i'm not so close with bob, but we occasionally hang out and grab a few drinks.
3.we are supposed to meet her at the train station.
4.you could clearly see that someone will be drowned, but u didn't take any action.
5.there are only 12 days left to buy a christmas gift, including the weekend.
6.without immediate action, lots of wild animals will die from hunger.