program checkout on-conditions

例句：

1. 1. The program was well-received by the audience.
   这个节目受到了观众的热烈欢迎。
2. 2. They have a programfor every weekend.
   他们有一个每个周末的计划。
3. 3.The program is designed to improve students'learning efficiency.
   这个计划旨在提高学生的学习效率。