11. His visit to London last spring is ______ as a great success. A. looked into B. looked to C. looked over D. looked upon 12. You will complete your project more easily if you take ______ of all the facilities here. A. privilege B. advantage C. chance D. care 13. Seventy guests had been invited to the party, but only fifty ______. A. turned around B. showed up C. turned out D. showed off 14. All we can do is to hope this chemical plant will take ______ to reduce air pollution. A. measures B. ways C. positions D. methods 15. She was just too busy yesterday, ______ she would surely have gone there with you. A. however B. for C. therefore D. otherwise
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