Question

Paper money was in ________ use in China when Marco Polo visited the country in ________ thirteenth century．

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

Answer 1

C
“某人或某物处于……状态或环境中”，往往用be in+状态或环境的名词，如：be in danger处于危险中，be in need需要时，be in use使用。序数名词前往往用定冠词。