12. A small-sized heater is considered convenient and effective for its direct heat to a room, but it can also _____ our house. For example, a fire risk is very likely to exist.
(A) pose a threat to
(B) take an adventure of
(C) make a difference over
(D) have nothing to do with

8. After the historic appointment of Kim with President Trump, the administration of North Korea announced that they’d desert all of the _____, not just the nukes. (A) weapons (B) prisoners (C) peninsulas (D) recessions

9. The Indian Prime Minister has been an active _____ of yoga in an attempt to promote this traditional exercise at home and abroad. (A) opponent (B) challenger (C) proponent (D) contender

10. In the movie of the Jurassic World, the former park manager Claire Dearing came to discover a _____ that could destroy the natural order of the planet while saving the last few dinosaurs. (A) publicity (B) ingenuity (C) conspiracy (D) bureaucracy

11. The conservative party participated in a debate on the _____ of capitalism, and surprisingly, they were convinced of the benefits of free market. (A) dos and don’ts (B) pros and cons (C) ups and downs (D) ebbs and flows

13. Recently divorced, our neighbor downloaded an app of online dating _____ new and true love. However, no one believed he’d find an ideal mate from the virtual world. (A) in search of (B) in addition to (C) in supply for (D) in accordance with

14. A: Stop playing the video games on your computer all day long! B: Come on, it is just the start of our summer vacation. A: Alright, I’ll leave you alone, if you choose to be a _____. (A) hot potato (B) baked potato (C) sweet potato (D) mouse potato

15. A: Wow, it finally comes to the day of our trip.                                                                                       B: Yes, I am so excited now. _____.                                                                                                            A: Sure, the bus will be coming in 30 minutes. (A) Let’s hit the road. (B) It’s all Greek to me. (C) You are the apple of my eye. (D) Don’t put all your eggs in a basket. 

16. In spite of the fast development of technology, machines should be designed to make people work _____ instead of replacing them. (A) less productive (B) more productive (C) more productively (D) less productively

17. An African-centered academy is teaching children the great history of the pre-colonial kingdoms rather than the melancholy history of slavery as if that _____ their first start into history. (A) be (B) are (C) been (D) were

18. _____ strike a balance between the advantages of high-tech advancement and its disadvantages is still a question unanswered. (A) What (B) How to (C) Wherever (D) No matter when