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

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

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

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