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.

A. sewage

B. disinfectant

C. oil

D. concoction

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

A. alarmed

B. hostile

C. noisy

D. agitated

Ali plays the guitar with great dexterity.

A. wisdom

B. experience

C. pride

D. skill

Obi's behaviour is questionable

A. disputable

B. worrisome

C. dubious

D. refutable

The electricity supply in this community is erratic.

A. unpredictable

B. disorderly

C. low

D. temporary

He became really disheartened when he heard the news.

A. defamed

B. dishevelled

C. depressed

D. disturbed

The office has taken stringent measures to protect its facilities.

A. suitable

B. right

C. strict

D. complete

Adaobi was appalled by the shabby appearance of the man who brought her the message from home.

A. shocked

B. discouraged

C. annoyed

D. humiliated

Henry likes to be involved in shady deals.

A. unknown

B. undisclosed

C. dishonest

D. doubtful

A good student should be inquisitive

A. hardworking

B. busy

C. curious

D. studious