Question

Ideas have floated, but hardly ever implemented . ( Rewrite using a single word in place of the underlined words

Answer 1

Ideas have floated, but hardly ever implemented.

Explanation:

• This phrase means that many creative ideas are generated by intelligent people reading development, security, etc.
• However, these ideas need a framework for implementation  
• But they often remain ideas and never get implemented due to lack of facilities
• Government and other authorities do not support such ideas

See a relevant question here:

the idea of development​

https://brainly.in/question/12408581

Answer 2

Answer:

IDEAS HAVE BEEN FLOATED BUT NEVER IMPLEMENTED

Explanation:

SINCE THE UNDERLINED WORD WAS HARDLY EVER