One is expected to behave _________ on some special occasions

On Monday mornings it usually ________ me an hour to drive to work although the actual distance is only 20 miles(2013·陕西，11)

Are these your grandparents — .

Do you mind if I smoke here—_____I’ve got a bit of cold these days

is works earned him quite a reputation in Liverpool, he has stayed there mostof his life, ___________ the occasional visit to his hometown.