以他目前的状态，入选首发阵容是十拿九稳的事。

In this form, he's ___a ___safe ___bet for the starting lineup.

黑色对于正式场合来说总是一个稳妥的选择。

Black is always ___a ___safe ___bet for formal events.

投资可再生能源似乎是未来一个稳赚不赔的选择。

Investing in renewable energy seems like ___a ___safe ___bet for the future.