Question

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

[　　]

A．

the;/

B．

the; the

C．

/; the

D．

/;/

Answer 1

答案：C
解析：

序数词前加定冠词，“in＋单数名词”表示人或事物所处的一种状态。