John may be sincere, but I suspect that he has an axe to grind . This means that John has a

choose the word or group of words that is nearest in meaning to the underlined word as it is used in the sentence.

 So much effluent has been poured into the stream that its water has become unsafe for drinking.

choose the word or group of words that is nearest in meaning to the underlined word as it is used in the sentence.

The students became restive after the authorities increased their tuition fees.

choose the word or group of words that is nearest in meaning to the underlined word as it is used in the sentence.

Ali plays the guitar with great dexterity.

choose the word or group of words that is nearest in meaning to the underlined word as it is used in the sentence.

Obi's behaviour is questionable