試題詳解

19. Since the Paris Agreement was signed in 2015, there   has been   a wave of  corporate commitments to reduce emissions. But the increase in enthusiasm   for    climate responsibility   has been   matched by a rise in concerns that some  companies are using advertising and public messaging, with buzzwords such as "carbon neutrality" and "net zero," to try to appear   more sustainable   than they  actually are. This is   referred   by some as "greenwashing." 

(A)has been
(B)for
(C)has been
(D)more sustainable
(E)referred