When the workers are organized in trade unions, their employers find it hard to lay them ______.

The rain looked as though it had ______ for the night.A...

单项选择题The rain looked as though it had ______ for the night.

Weather ______, our family can go to the grassland in I...

单项选择题Weather ______, our family can go to the grassland in Inner Mongolia and stay with herdsmen for a few days.