“The Mozart effect” is a study described in 1993 in Nature _______ aroused public interest about the idea _______ listening to a classical music somehow improves the brain.
Many countries are increasing their use of natural gas, wind and other forms of ______.
It may not be a great suggestion. But before ______ is put forward, we will make do with it..
Try not to cough more than you can ______ since it may cause problems to your lungs.
He was unhappy when he sold his guitar. After all, he ______ it for a long time..
Animals are obviously ______ lower form of life than ______ man.