The students go out for a trip twice a year.对划线部分twice a year提问___ __ __ the students go out for a trip?

The students go out for a trip twice a year.对划线部分twice a year提问___ __ __ the students go out for a trip?
The students go out for a trip twice a year.对划线部分twice a year提问
___ __ __ the students go out for a trip?

The students go out for a trip twice a year.对划线部分twice a year提问___ __ __ the students go out for a trip?
How often do
谢采纳~