WE MUST ________ OUR FORESTS AND WOODLANDS FOR FUTURE GENERATIONS...

18. - DAP AN DE THI THU TOT NGHIEP 2011
Tiếng Anh DAP AN DE THI THU TOT NGHIEP 2011

18. We must ________ our forests and woodlands for future generations.

A. conserving B. conservational C. conserve D. conservation