----Which subject do you like better, math or physics? ---- I prefer _______ math ________ physics.
The Jiangs have lived in the city of Nantong since__________.
I found _______ difficult to work out the problem.
The Greens used to live in London and now they ________ in Beijing.
The train was travelling _______ low speed at that time.
— Have you ever been to Sanya? — Yes, ________already.