After the heavy snow, many students helped to clear away the snow ______ in our school.
A.willinglyB.sincerelyC.properlyD.calmly在线课程A
解析：
考查副词，A. willingly自愿地，B. sincerely真诚地，C. properly适当地， D. calmly冷静地，句意是：大学之后，很多学生自愿帮助学校清除雪。选A。