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A. I can see nine ducks.B. How many bikes do you have?C. How many birds do you have?D. I have fourteen new cars.E How many birds do you see?13. ( )14. ( )15. ( )16. ( )衡石量書整理 。5. 11, 13, ____, 17, 19 (thirteen / fifteen)6. 10, 12, 14, 16, ____ (eighteen / t