Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.
At the same time,they are taking strong _______ to protect wildlife resources.
To enjoy the scenery,he would rather _____ long hours on the train ___ travel by air.
His suggestion ____ the meeting be delayed was turned down.
-— How far apart do they live? ---- _______ I know,they live in the same neighbourhood.
My interests include football, bowling and surfing the web ____ studying my favorite subjects.