THIS IS THE FIRST TIME I...THE EXPERIMENT ON PLANT BLEEDING. A. HAV...

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

5. This is the first time I...the experiment on plant bleeding.

A. have done B. do C. would do D. did