用 have to \\ need to \\ because \\ since\\ 写一个句子 都要用上可以是 一段话 但要有联系

问题描述:

用 have to \\ need to \\ because \\ since\\ 写一个句子 都要用上
可以是 一段话 但要有联系

不可能的, because 和 since 不能在一个句子里

If you have to go back home on time,you need to take a taxi,because the bus has stopped running after 9:00pm since the new schedule carried out.