答题库 【答题库最新整理国开(电大)人文英语3-1379网上形考机考题库】 _________, the number of private cars will increase sharply in the coming couple of years.
【答题库最新整理国开(电大)人文英语3-1379网上形考机考题库】 _________, the number of private cars will increase sharply in the coming couple of years.
选择一项：
A. Undoubtedly
B. Doubtedly
C. Undoubted
译文：毫无疑问，在接下来的几年内私家车的数量将会大幅度增加。
