9、I don’t know whether you happen ___ , but I’m going to study in the U.S.A. this September. A. to be heard B. to be hearing C. to hear D. to have heard 10、As the twentieth century came to a close , the raw materials for a great national litera...
6. ___ you feel too ill to go out, I would rather not stay at home tonight. A. Because B Although C. Unless D. If 7. Because of many mistakes, she was made ___ these letters again. A. type B. to typing C. typed D. to type 8. It is hot...
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