Li Xing’s illness(病) is very_____. You must take his illness ______.
Our teacher told us that light much faster than sound.
In our class _____ of the students _____ girls.
—It seems _____ you like to work with children. —Yes, they are so lovely.
Compared with last year, our pay _____ about ¥500 every month.
China has the _____ population in the world.