完成句子。（每小题2分，共10分）
________________(从那天起), I never spoke to him again.
He managed to make himself understood ______________(在….的帮助下) body language.
Would you please_____________(看守，照看)my things when I am away?
The two companies are ____________(与….比赛；与….竞争)each other.
He made a big mistake, and , _____________ , (结果)lost his job.