at后面接小的地方 in后面接大的地方 on后面接时间 举例如下： arrive in Beijing arrive at school arrive at the park The letter arrived ________ Monday morning. A. at B. from C. in D. on 答案：D
arrive at 和arrive in的区别！！！！！
at后面接小的地方 in后面接大的地方 on后面接时间 举例如下： arrive in Beijing arrive at school arrive at the park The letter arrived ________ Monday morning. A. at B. from C. in D. on 答案：D