Gun control is a subject _________ Americans have argued for a long time.

We’ve just heard a _____ on the radio that a hurricane is _____ to come.

Mary! If only we had less homework today!—_____We all need more relaxation

Mr. Lee has worked in a bookshop _______ he left college in 2007.

Sales director is a position ________ communication ability is just as important as sales skills.(2012·重庆)