They also agree that it is the burning of more and more fossil fuels that has resulted ____ this increase in carbon dioxide.
The sick boy lay in bed __________, listening to the songs on the radio.
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.