How long have you been working as an assistant here?—__________I finished middle school

With the aid of the most advanced equipment, new facts about the ancient pyramids in Egypt have recently .[ ]

Having been told _____ where he lived, I had no difficulty in finding Peter’s address [ ]

______green or_______in a lightgreen room________good for us．

______ tablet computers like Apple’s iPad just before bed, a researcher says recently, can lead to a poor night’s sleep.