14. Allen’s new house features a ____ roof, because of which the indoor space is filled with sunshin
15. Today, divorce rate has been escalating. One of the reasons is constant quarrels over ____ thing
16. Despite the dispute over high college costs, ____ rates are still going up. (A) tuition (B) intu
17. Mr. Fang’s effective teaching methods have ____ helped students better understand the complexiti
18. “Don’t’ forget to ____ the living room as there are bread crusts everywhere,” said the mother. (
19. When writing compositions, you should not use ____ sentences that may fail to address ideas prec
20. Tiffany bought the diamond necklace out of ____. She enjoys showing luxuries to her friends. (A)
Many consumers like the idea of buying earth-friendly or “green” products because they think such pu