smoking is a bad habit,___ you should get rid of definately.A that B one C what D it 选择什么及原因?
问题描述：
smoking is a bad habit,___ you should get rid of definately.
A that B one C what D it 选择什么及原因?
答
C
答
B
one 在这里代替 a habit,作前文a bad habit 的同位语
语言点：
代替 a + 可数名词单数 要用one