The Australian boy has a good ________ of Chinese and can express himself freely in it.
It was ______ who did it, but it was _______ that we are talking about.
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.