A smaller engine is more ___, using less fuel over the same distance.

The country faces serious ___ problems after years of slow growth.

The signing of the treaty was a ___ moment for the region.

Students used ___ documents from the nineteenth century.

The medicine was ___, reducing pain within an hour.

The new machine is more ___, producing the same output with less energy.

The noise was ___, never stopping for even a moment.

The office had ___ interruptions throughout the morning, with short quiet periods between them.

The novel is a ___ example of detective fiction, often copied by later writers.

The concert introduced children to ___ music by Mozart and Beethoven.

The factory town became an important ___ centre in the 1960s.

The intern was extremely ___, finishing every task before the deadline.

Adult education helps people become more digitally ___.

The essay discusses the ___ style of modern novels.

It is ___ to save money before leaving a secure job.

Young children can be ___ to loud criticism.

The manager made an ___ apology after the error was discovered.

The clerk sounded ___, giving unwanted advice about every form.

The new centre provides ___ care for elderly residents.

The guide was warm and ___, making visitors feel welcome.

The school needs a more ___ way to heat classrooms in winter.

The report focuses on ___ growth in coastal cities.

The first moon landing was a ___ event watched around the world.

The museum displays ___ maps of the old trade routes.

The online form is ___ because it saves staff time and reduces errors.

The campaign was ___ in persuading drivers to slow down.

A ___ stream of traffic passed the school all afternoon without a break.

There were ___ delays to the trains, but each lasted only a few minutes.

The film has become a ___ comedy that many people still quote.

The school orchestra plays both folk songs and ___ pieces.

The area is known for ___ production, especially steel and chemicals.

Her ___ attitude helped the team finish the survey early.

Many adults are financially ___ but still struggle with legal documents.

The course analyses ___ devices such as metaphor and symbolism.

It would be ___ to check the costs before approving the plan.

The equipment is ___ to heat and must be stored carefully.

The university gave an ___ statement about the cancelled exam.

The assistant became ___ and tried to control decisions outside his role.

The doctor asked some ___ questions about sleep and diet.

A ___ receptionist can make patients feel less anxious.