因为施工，这条人行道被封闭了。

The sidewalk was ___closed due to construction.

那个私人俱乐部在工作日对公众是关闭的。

The private club remains ___closed to the public on weekdays.

她在失去宠物后变得封闭起来，不再和任何人谈论自己的感受。

After losing her pet, she became more ___closed-off and stopped talking about her feelings with anyone.