In 1990, ________ Belgian inventor by ________ name of Bakelite invented the first of the modern plastics．

1. A.
   a; a
2. B.
   a; the
3. C.
   the; a
4. D.
   the; /

In 1990, _____ Belgian inventor by _____ name of Bakelite invented the first of the modern plastics.

A. a; a             B. a; the         C. the; a                  D. the ; /