ABOUT 000 SPECIES OF PLANTS AND ANIMALS ... EACH YEAR. A. ARE ALRE...

20. - BÀI SOẠN UNIT 10: CONVERVATION
BÀI SOẠN UNIT 10: CONVERVATION

20.

About 000 species of plants and animals ... each year.

A. are already been eliminating

B. has already been eliminated

C. are already being eliminated

D. have already eliminated