Tìm lỗi sai và sửa
1. Preserving natural resources mean reserving them for our future
        A                                     B        C                  D
2. Regardless of your teaching method, the objecive of any conversation should be
         A                                                                                       B( should be)
for students to practice speaking words
C                               D(speaking words)
3. Despite of the increase in air fares, most people still prefer to travel by plane
    A                                                                   B      C           D