Zhè jiàn shì jiāogěi tā bàn, sān tiān bǎozhèng jiāojuàn.
Give the task to him - he'll deliver within three days, guaranteed.
Tips
usage
交卷 is a verb-object compound (literally 'to hand in [the] paper'); both halves can split - 交了卷 ('handed in [the] paper'). The figurative sense ('deliver on a task') is very common in workplace Chinese.
