Shall I inform him of the change of the schedule right now?— I’m afraid you _____.

___ he will come or not is_____ worries us

The invention of artificial hearts marked a turning point in the battle ________ heart disease.[ ]

he course of human development, the ultimate aim of the human race is to pursue the spiritual joy based on ______ materials.

If you _________ my advice, you ________ your failure now. You _________ your victory ?[ ]