根据括号内的汉语提示，用句末括号内的英语单词完成句子。
1．We’ve already bought the house, but we won’t ___________________________ (拥有它) until next May.（possession）
2．You___________________________ (应该抓住) to the tree, otherwise, you would not have fallen. (hold)
3．Tom ___________________________ (和玛丽订婚) last Saturday, whom he had met on the train.(engage)
4．___________________________(与她合作将很有意义)，which will benefit us a lot.(point)
5．How could he get the plan___________________________ (贯彻实施) without anyone to support him?( carry)
