Some people are worrying about the possibility ________ cellphones could be responsible for a range of illnesses, from rashes to brain tumors.
Late again! What’s your ______ this time?
The professor was so ______, hardly anyone came to class.
Jake’s passed his exams. We’re going out to ______.
We couldn’t understand: what could ______ his sudden change of mind?
I didn’t mean to break your vase—it was just ______.