How can we ____ all these flies in the kitchen?
Any student _____ will be disqualified from the exam.
The theory he sticks to ______ to be of no use in our studies.
The life he is now used _____ quite different from ours.
He has changed a lot. He _______ not what he _______.
“When did he leave the classroom?” “He left _______ you turned back to write on the blackboard.”