问题
Haven’t you heard the news? —–What news? —– Some of the workers are _______ while others are ______
A:on the march, on strike
B:on march, on strike
C:on the march, on the strike
D:on the strike, on march
B:on march, on strike
C:on the march, on the strike
D:on the strike, on march
正确答案是：
