EVERYBODY MUST TAKE PART ...PREVENTING DEFORESTATION. A. ON B. OF C...

7. - TRAC NGHIEM TUYEN 10 ANH VĂN
Tiếng Anh TRAC NGHIEM TUYEN 10 ANH VĂN

7. Everybody must take part ...preventing deforestation.

A. on B. of C. in D. by