______ volunteers are working for 2014 International Horticulture Exposition in Qingdao.
| A．Thousands of | B．Two thousands |
| C．Thousand | D．Two thousands of |
______ volunteers are working for 2014 International Horticulture Exposition in Qingdao.
| A．Thousands of | B．Two thousands |
| C．Thousand | D．Two thousands of |
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