12. According to medical research, most back pain can be relieved through exercise without ______ .
(A) catalogue
(B) district
(C) surgery
(D) triumph

8. James is a man of ______ ； he never does anything that goes against his standard of good behavior. (A) factory (B) principle (C) stomach (D) whisper

9. The professor ______ her points with tables and figures to provide visual aids for better understanding. (A) divorced (B) endangered (C) illustrated (D) trembled

10. Sandy is a pet-lover and good at using different ______ to make her puppy do various tricks. (A) alleys (B) elections (C) freezers (D) gestures

11. When we travel abroad, it is necessary for the immigration officers to ______the departure date on our passports. (A) murder (B) regret (C) stamp (D) waste

13. On the first day of work, Oscar was told to treat all people in the workplace with ______ and respect. (A) barrier (B) courtesy (C) fiction (D) merchant

14. Ski resorts often use ______snow to keep them open through the winter and early spring to extend their ski seasons. (A) artificial (B) brutal (C) explosive (D) fierce

15. We will be more ______ and safer to wear bright-colored clothes when walking on the street at night. (A) elderly (B) gradual (C) organic (D) visible

16. Andy: Professor Lee, could I have a word with you? Professor: Yes, of course. Andy, what’s on your mind?Andy: Would it be all right if I leave class early today? I have a dentist appointment. Professor: Andy, ______Thanks for telling me. (A) you do have a class. (B) that’s not a problem. (C) I’ll be right with you. (D) let me get this straight.

17. Claire: I’m experiencing a culture shock. Francis: Oh, really? I’m appreciating the dance steps native to the local culture. Claire: ______But I’m glad to see how passionate the dancers are in the music. Francis: Guess what? We’re invited to the next slow dance. (A) I’m afraid you have a culture shock. (B) We’re shocked to know our culture. (C) You just came back from a wedding party. (D) They’re different from those I'm familiar with.

18. Timothy: Jeremy is driving me to my job interview at the bank. Angela: In that outfit? ______ Timothy: What would you recommend me to wear then? Angela: If I were you, I’d wear a navy blue or gray suit with a white dress shirt and a tie. (A) Shouldn’t you change? (B) Come on. It’s too late! (C) Wish you get well soon! (D) Wouldn’t you like to know?