Working hours in the United States ____________over the past 20 years.A. have increased

The workmen want to ________ the number of working hours and to increase pay.A: delete

Hardship did not end with freedom. There were（1)______ regional variation in both the stat

Since the late 1930s the Bureau of Indian Affairs of the United States has been working to

_____（获得奖学金) gave Martin the chance to go to a college in one of the northern stat

The workforce have recently been calling for their working hours to be reduceD.Many compan

In general matters which lie entirely within state borders are the ______ concern of stat