open up|opened up|opening up

几家咖啡连锁店已在该地区开设了新分店。

Several coffee shop chains have ___opened ___up new branches in the area.

快餐店正在全镇各地开张。

Fast-food outlets are ___opening ___up all over the town.

随着新住宅区的开发，他们计划开设更多本地商店。

With the new housing development, they plan to ___open ___up more local shops.