. At a rough estimate(估计), Nigeria is ____ Great Britain.
I’m looking for a flat. I’d like _______ with a garden.
He is not _______ as a leader but he has gained _______ in teaching.
He was ______ medical student before he turned _______ engineer.
He’s so ill that his father has to send for _______ doctor.
Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.