A. hundreds of B. transport C. factory D. volleyball A. Be careful B. get C. at a time D. quotation A. cube B. new C. heavy D. jumping A. what a pity B. couldn't C. graceful D. hold up A. settle down B. piece C. Chinese opera D. keep in touch A. composition B. wheel C. conscientious D. promptly A. factor B. pull-up C. year D. at all A. plantation B. gradual C. have got D. guide A. nut B. accommodation C. taxi D. drive away A. fluency B. chapter C. stir D. sales assistant