My book, The House of Hales, is missing. Who ________ have taken it?
He didn't attend class today, I guess he __________ have caught a cold again.
__________ part that women __________ in society is great.
If we want to succeed, we need to __________ the quality of challenging difficulties.
__________ her home, Lily went to the kitchen and began to prepare supper.
There is no __________ that the Internet now has replaced the radio as the most important means of getting information.