It's s----- to rain tomorrow. s 处应填什么?

It's《 supposed_》 to rain tomorrowbe supposed to被认为是 ,应该会be supposed to应该；被期望；理应；认为必须Be Not Supposed To不得be supposed to do应该干；理应做某事；应该；被要求干什么be supposed to be被认为是be supposed to do sth你应该在八点前到这儿；应该做某事；应当做某事；应该作某事be supposed to have done理应当be supposed to + V应该be supposed to do something理应做be meant/supposed to do应做be supposed to （do）应该希望能采纳,谢谢