写多益模拟测验时写到一题：
If students are unable to arrive___the date specified on their visa documents
,they will be sent homr and will have to rrstart the application process.
选项有：in from. between by
答案是by
想请问arrive by是固定用法吗？都只看到arrive at/in的讨论，还是说这题只是单纯问b
y可当时间介词？
谢谢