Fred entered without knocking and, out of breath, sank________ a chair.[ ]

____________ looking after threechildren at home, she no longer has time to enjoy the various activities in theclub

The teacher told us to remain silent unless _______.

Customers willreceive a free CD as a _______ with any order over 200 Yuan in thisstore .

Our car broke down suddenly and the heavy rain________ our helplessness.