we consider__ the instrument should be adjusted each time it is used.A,that it necessary B,it necessary that.答案选择A,为啥B不对?

we consider__ the instrument should be adjusted each time it is used.A,that it necessary B,it necessary that.答案选择A,为啥B不对? We () in the sea we enjoy（ ）（we) in the park. We are in the ture We have dinner in the----- We read in the library we ( )the building in 1995. we draw pictures in the( ) we meet in the hall in Park We have the meal in the evening. we ___ the hill in the park thought the matter,in the process,we are we (1)we（?) in the cinem. (2)we in the library. (3)we can (?) in the post offic. (4)we in thehospita. (5)we i the bookstore. we wash dishes in the s___ in the kitchen we play in the playground.对in the playground提问 英语翻译we [ ] [ ] [ ] [ ] [ ] in the dinasour park yesterday. We ofter watch TV in the s______room in the museum,we can't take