TODAY A LOT OF IMPORTANT INVENTIONS ARE CARRIED ________BY SCIENTI...

16. - 25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN
25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN

16.

Today a lot of important inventions are carried ________

by scientists.

A. in

B. with

C. for

D. out