Explanation

The idiom "flogging a dead horse" means trying to continue with something that has no hope of success.

In this context, it suggests further appeals are pointless and a waste of time.

Explanation

The correct phrasing requires "Was the microwave" to form a proper question about the invention of the microwave.

It follows the structure of asking about the invention of a specific item in the past.

Explanation

Sound waves are characterized by amplitude (loudness), wavelength (distance between wave peaks), and frequency (pitch).

These parameters help describe how sound behaves and is perceived.

Explanation

Present continuous active voice ("are repairing") changes to "is being repaired" in passive voice.

The subject (they) becomes the agent in the passive sentence.

Explanation

Pragmatic means practical and focused on results or real-world applications.

Such students choose courses based on usefulness and immediate benefit.

Explanation

Both Farid and Naseem are good swimmers.

This sentence follows the correct structure, placing "Both" at the beginning for emphasis, and it maintains clarity and proper word order.

Explanation

Diagnostic teaching involves identifying specific learning problems and providing targeted interventions to address them.

It is focused on understanding students' individual challenges and tailoring the teaching approach accordingly.

Explanation

In indirect speech, a request or suggestion is often phrased with "asked."

"Make coffee, please" is a polite request, hence the use of "asked" in the indirect speech.

Explanation

Explanation

He advised his friend to leave the town at once.

The sentence expresses a suggestion or advice in the form of a conditional, which turns into advice in indirect speech.

“If I were you...” typically implies giving advice.