TRY TO RECYCLE THINGS AND WE WILL SAVE NATURAL RESOURCES.  IF WE...

33. - DE THI TS LOP 10 TP HCM 2010 2011 DAP AN
Lớp 10 DE THI TS LOP 10 TP HCM 2010 2011 DAP AN

33. Try to recycle things and we will save natural resources.

If we ___________________________________________________________________________________________