One of the sentences where the word separation is wrong. In this sentence it should actually be 一起 (together) + 来 (go), not 起来 (which can be a preposition on its own in other sentences).
One of the sentences where the word separation is wrong. In this sentence it should actually be 一起 (together) + 来 (go), not 起来 (which can be a preposition on its own in other sentences).