Câu hỏi: There has been insufficient rainfall over the past two years, and farmers are having trouble.

A. adequate

B. unsatisfactory

C. abundant

D. dominant

Câu 1: His new yacht is certainly an ostentatious display of his wealth.

A. showy

B. expensive

C. modest

D. large

Câu 2: After many months of grueling work and painful injuries to her shoulder and back, Susan realized that her dream of swimming the English Channel was unattainable.

A. impossible

B. unachievable

C. realistic

D. confused

Câu 3: He is not popular and has a lot of enemies.

A. opponents

B. friends

C. betrayers

D. attackers

Câu 4: He inherited a lucrative business from his father.

A. lucid

B. unprofitable

C. wealthy

D. profitable

Câu 5: They are launching a campaign to promote awareness of environmental issues.

A. encourage

B. publicize 

C. hinder

D. strengthen

Câu 6: After a grueling and busy week at work, the stillness of the river reminded Lara of the silence.

A. uproar

B. tranquility

C. serenity

D. tameness