The beans have not been properly …

Analyze the question: The sentence is "The beans have not been properly ____." The structure "have not been" is the present perfect passive, so it needs a past participle.

Explain the concept: The present perfect passive is formed as:

have/has + been + past participle

The verb is grind, which is irregular:

• Base form: grind
• Past tense: ground
• Past participle: ground

Check each option:

• A. grind is the base form. It is wrong after "been."
• B. ground is the past participle of "grind." It is correct.
• C. grinding is the present participle. "Have not been grinding" would need an active meaning, and the beans cannot grind anything themselves, so it does not fit.
• D. grounded is not a participle of "grind." It comes from the verb "ground," meaning to punish or to base something, and it does not make sense with beans.

Solution: "The beans have not been properly ground." This means the beans were not milled finely enough, which is a natural thing to say about preparing akara or moi-moi.

Answer: B

Tip: Memorize the common irregular verb patterns: grind–ground–ground, find–found–found, bind–bound–bound, wind–wound–wound. After "have/has/had been," always look for the past participle for passive meaning.