我们寻求帮助的恳求无人理睬。

Our pleas for help ___fell ___on ___deaf ___ears.

他衷心的建议无人听取。

His heartfelt advice ___fell ___on ___deaf ___ears.

她关于回收利用的建议在公司里无人理会。

Her suggestions for recycling ___fell ___on ___deaf ___ears at the company.