我不觉得这房子安全。

I don't feel that the house is ___secure.

她的晋升使她在公司的地位更加稳固。

Her promotion has made her position in the company more ___secure.

博物馆有一大笔捐赠，所以它的未来是安全的。

The museum has a large endowment, so its future is ___secure.