THERE ARE MORE THAN 6000 LIVING LANGUAGES, _____ WHICH ENGLISH IS...
13. There are more than 6000 living languages, _____ which English is the most widely used.
A. of
B. for
C. about
D. on
13. There are more than 6000 living languages, _____ which English is the most widely used.
A. of
B. for
C. about
D. on