.You can take as many as you can because they are free of ______.
.More natural resources should be made use of __________ the increasing need of energy.
.--- Is your headache getting __________ ? --- No, it’s worse.
.The coffee is wonderful ! It doesn’t taste like anything I _________ before.
.As I am not feeling well, I really appreciate __________ to take my place.
.John, look at the time. __________ you play the piano at such a late hour ?