open crossed check

例句：

1. 1. The door was open when I arrived.
   我到达时，门是开着的。
2. 2. She opened the window to let fresh air in.
   她打开了窗户，让新鲜空气进来。
3. 3. The store is open from 9 am to 6 pm.
   这家商店从上午9点到下午6点营业。