Greeley's injunction “Go West, young man!” resulted in a massive migration of population, with people occupying land（）no one held title of ownership and that had yet to be sold

Mr. White brought a countercharge against you because y...

单项选择题Mr. White brought a countercharge against you because you had______ him for smuggling several pieces of antiques and cultural relics.

I______ of his course of action, so I told him to go ah...

单项选择题I______ of his course of action, so I told him to go ahead.

The problem has been（）my mind all day.A. preying onB. g...

单项选择题The problem has been（）my mind all day.