. Many people are still in habit of writing silly things in public places.A. the;theB. /

问题补充：

. Many people are still in habit of writing silly things in public places.

A. the;the

B. /; /

C. the; /

D. /; the

答案：

A. the;the

B. /; /

C. the; /

D. /; the

解析：该题考查冠词问题。In the habit of是惯用法。pubic places是复数名词，表示泛指概念，其前面不用the。