They put up a tent in the m_____ of a field.

They put up a tent in the m_____ of a field. They put up the tent in the middle of field.为啥用up, 名词单复数问题?the boys put pu their tent in the middle of a field Where did they( a.it put up b.their tent put up c.put up it 连词成句put a and fire to a up made they tent warm keep put a and fire to a up made they tent warm keep They put up tent by the fire..这里为什么用put up?不能用put out和put on 英语翻译Late in the afternoon,the boys put up their tent in the 英文翻译Late in the afternoon, the boys put up their tent in the 英语翻译1.The side of a large tent is in the shape of an isoscel There____ a tall tree in the middle of the field. We need （ ） in our field trip A.tent B.air-conditioner