题目内容：

英语单项：It's time__about the traffic problem downtown.
A.something was done B.everything is done C.anything will be done D.nothing to be done
求解,及每个选项的解释 谢谢

优质解答

是时候对市中心的交通采取一些措施了.
A 采取一些措施.
B所有方法都实施（范围太广,不符合实际）.
C任何一种都要实行（太过决断）.
D不进行任何行动（与句子本意冲突,因为It's time为肯定）.