Smoking, is a bad habit, is, however, popular. A. that B. which C. it D. though
来源:网络
时间:
推荐文章

Smoking, _______ is a bad habit, is, however, popular.
A. that B. which C. it D. though
试题答案
B
解析:
which is a bad habit 非限制性定语从句.