日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

23. Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised.

23. Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised.

A. attention                B. attentions                 C. at ease                      D. Attentively

Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised.

A. attention　 B. attentions　 C. at ease　 D. attentively