Most of my friends say that I __________ my mother.

There is no doubt ______ he will pass the final exam, for he is always working hard.

_________of looking down upon the disabledperson in public, but he turned a deaf ear to it.

When _____ help, one often says “Thank you.” or “it’skind of you”

The professor could hardly find enough grounds on which to base his arguments ______ the new theory