MOST OF THE EXPERIMENTS ARE CARRIED OUT IN ______ .A. LABORATORIES...

19. - DE THI THU DAI HOC MON TIENG ANH VA DAP AN THAMKHAO
DE THI THU DAI HOC MON TIENG ANH VA DAP AN THAMKHAO
19.Most of the experiments are carried out in ______ .a. laboratories b. farms c. fields d. schools