12. There was a time when human beings worried that all of the earth’s surface would be __________ covered with lava were a giant meteor to hit the planet. A. thickly B. fully C. densely D. totally

11. Some teachers have tendency to _________ preference to students with disadvantaged backgrounds such as poor and handicapped students. A. lend B. give C. deliver D. send

10. Despite the development of e-books and online reading materials, printed books are still regarded as a wonderful _______ of entertainment. A. resource B. place C. source D. replacement

9. That manufacturer is worldly-known for selecting only ingredients that meet their very strict _______ for quality and renewability. A. demands B. necessities C. criterions D. requirements

7. The recent heavy rains have contributed to ease the water _________ resulted from the severe prolonged drought. A. shortage B. lack C. absence D. deprivation

6. In some cultures, that men make eye contact ________ women are strictly forbidden outside the immediate family. A. on B. to C. with D. for

8. Students in private school often receive more ________ attention from their teachers; therefore, they have more chance to reach their full learning potential. A. personal B. individual C. distinctive D. unique

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5. It seems that they had had a ________ row, as she had locked him out of the apartment all night long. A. freezing B. warming C. grieving D. blazing