The required items are put together
The style is built.
The cloth fabric is cut.
The three ends of the fabric are pinned and sewed.
The open sides are retracted and sewed.
The placement of the Velcro inside the bag is checked.
The velcro tapes is attached.
基本就是宾语提前,动词加被动式.注意动词被动式有特例,要查一下字典.