All the students in this school are required to____ at least two lectures on how to study every month.
She was accused ____ cheating in the exam and was to ____.
The idea puzzled me so much that I stopped for a few seconds to try to _____.
The man ____ of killing his family members was reported to have been taken to the police station
School children must be taught how to deal with dangerous _____.
____ happened to be no one in that house when the typhoon hit the area.