200 xu+5 điểm
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Question 19. It turns out that the doctor and the pharmaceutical company have been _____ for years, conspiring together to push expensive medications on patients regardless of their actual need.
A. hand over fist B. hand in glove C. hand in hand D. hand to mouth

Question 20. Dharavi, one of Asia's largest slums, has long been considered to be a _____ of crime and drug addiction.
A. melting pot B. frying pan C. hotpot D. hotbed

Question 21. Togo and Ghana are making _____ to address forest landscape restoration and sustainable wood energy.
A. steps B. moves C. measures D. actions

Question 22. He was caught _____ taking money from the till and was fired.
A. full-bodied B. green-fingered C. red-handed D. blue-blooded