Nowadays ,a lot of people are still in------habit of smoking in------public places.
问题描述：
Nowadays ,a lot of people are still in------habit of smoking in------public places.
答
in the habit of
因为habit已经被限定了,所以是特指,用the修饰
in public places
因为public places是泛指,没说具体那个地方的公共场所,所以不填,表示泛指