With an appropriate relative pronoun or relative adverb:

This custom, ________originated many centuries ago, is slowly disappearing.

genitive

Please list the relationship and the difference between adverbials and adverbs.

non-finite verbs

Using inversion:

I had hardly reached home when it started to rain.

Using fronting:

I just don’t know what will happen next.

Using exclamation:

The old lecturer made a very boring speech this morning.

Using subordination:

Most people arc interested in the proposed lax reform being debated in the congress. They hope it will lower taxes for them.

Reinforcing the negation:

No one is sure of the reason why she suddenly quit her job in the company.

Using a relative clause:

Wind power is an ancient source of energy. People are now trying to harness wind power.

Using a relative clause:

The tests do not measure a genuine intellectual ability. Colleges use the tests to screen applicants for admission.