Simple sentences:
* The new system is efficient and saves us time.
* Her work is efficient and well-organized.
* The company is striving to be more efficient in its operations.
More complex sentences:
* The new software has made the workflow more efficient, reducing errors and increasing productivity.
* Despite being a small team, they are highly efficient and manage to complete projects on time.
* Efficiency is key to success in this competitive market.
Sentences with different parts of speech:
* The efficiency of the new process is remarkable. (noun)
* The company is known for its efficient staff. (adjective)
* They work efficiently to meet their deadlines. (adverb)
Sentences with specific contexts:
* The efficient use of resources is essential for sustainability.
* Efficient communication is vital for a successful team.
* The doctor performed the surgery with efficiency and precision.
Remember to choose the right part of speech and context for your sentence. "Efficient" can be used in various ways to describe things that are effective and productive.