随着年龄增长，他的头顶变得越来越秃了。

As he got older, the top of his head became even ___balder.

这个山坡越来越秃了，几乎没有草和灌木。

The hillside became ___balder with hardly any grass or shrubs left.

他的解释比我预想的还要胡说八道。

His explanation was ___balderdash than I expected.