Asastudent,youmustarriveatschool

來源：國語幫 1.83W

As a student, you must arrive at school ________.

A. on time B. in time C. for the first time D. from time to time

A on time“按時”；in time“及時”；for the first time“第一次”；from time to time“有時；間或”。將選項代入題幹可知on time符合題意。