Many people are still in ____ habit of writing silly things in ____ public places. ( )
A. the, the
B. 不填,不填
C. the, 不填
D. 不填,the
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Paper money was in ____ use in China when Marco Polo visited the country in ____ thirteenth century. ( )
A. the, 不填
B. the, the
C. 不填,the
D. 不填,不填
She is _____ newcomer to ____ chemistry but she has already made some important discoveries. ( )
A. the, the
B. the, 不填
C. a, 不填
D. a, the
Many people agree that ___ knowledge of English is a must in ____ international trade today. ( )
A. a, 不填
B. the, an
C. the, the
D. 不填,the
______ usually go to church every Sunday. ( )
A. The Brown
B. A Brown
C. Browns
D. The Browns