THE PRODUCTION OF DYES, PERFUMES, AND EXPLOSIVE______ MADE A LOT OF PROGRESS
9. The production of dyes, perfumes, and explosive______ made a lot of progress.
A. have
B. has
C. having
D. to have
9. The production of dyes, perfumes, and explosive______ made a lot of progress.
A. have
B. has
C. having
D. to have