John is a creative person. He can often _____ ideas that are surprising to his classmates.
A month’s ______ is required from whichever party wishes to end the agreement.
He was ______ medical student before he turned _______ engineer.
He’s so ill that his father has to send for _______ doctor.
The price of _______ bike will partly be determined by the sort of ______ material used.
Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.