He was tired of their_________ (play) a trick on people who can’t speak properly.
(2012·南宁高二检测) He didn’t make _______ clear when and where the meeting would be held.
(2012·衡阳高二检测) People often have the belief _______ a healthy environment and development cannot be possible at the same time, but this does not have to be true.
We should always keep in mind that accidents _______ from carelessness while driving.
—Did you return the book on me? Why can’t I find it anywhere?—_______. You were writing a letter at your desk at that time.
(2012·洛阳高二检测) _______ of danger in the street at night, she had to go home with a friend _______ her.