A. homework B. mammal C. the long jump D. contaminate A. queue B. healthily C. thirty D. cocaine A. care B. wherever C. seventy D. anger A. previous B. excited C. sixty D. five A. twenty B. stay out C. take out the rubbish D. vapour A. fifty B. Beijing Opera C. bar D. be harmful to A. sum B. village C. greenhouse D. section A. forty-six B. impose C. whose D. devour A. eighty B. statue C. thrust D. interpreter A. rugged B. ad C. used D. forty