9. Mary’s eyes are weak, __________, she has to wear glasses.  A. but B. however C. and D. therefore 10. I’ll probably get lost unless he __________ with me. A. come B. came C. comes D. will come 11. __________ Tom was lazy and didn’t do his homework, he was punished by his parents. A. Since B. As C. Because D. All are correct 12. Cars and trucks are __________ from driving in the city center.  A. preserved B. banned C. prohibited D. B and C