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1. We must try our best to stop the pollution _______ a happier life. A. from livingB. to live C. living D. live 2.--- Hello, what are you reading? --- A book _______ by Bill Gates. A. writingB. written C. to write D. which written 3.--- What do you come here for? --- _______. A. Borrow a CDB. To borrow a CD C. Borrowing a CD D. Borrowed a CD 4. Yesterday I heard a story _______by my friend. A. told B. telling C. to tell D. tell 5. We can't help crying after _______ the sad news. A. hearB. heard C. hearingD. to hear 6. --- Would you mind _______ for a few minutes? --- No, not at all. A. wait B. to wait C. waitedD. waiting 7. Have you read this book? It's worth _______. A. to readB. read C. readingD. to be read 8. Mr Wang would like me _______ my classmates a talk. A. to give B. giving C. gives D. give 9. I find _______ him all about it. A. necessary to tell | 
