on time　按时
不要迟到.也就是按时到校
~~~~~~~~~~～～~~~~祝你进步,如对你有帮助,请及时采纳~~~~~~~~~~~~~~~~Alice can arrive __here before 8:00 A inB atCfor D /D here是副词，前面不用加介词~~~~~~~~~~～～~~~~祝你进步，如对你有帮助，请及时采纳~~~~~~~~~~~~~~~~