Li Xing’s illness(病) isvery_____. You must take his illness ______.

d him 300 yuan for the sneakers．— Oh, he charged you too much．You _____ them with half the money．

oy was sittingat the desk, ______ hard when his mother got home

I first met Mr Zhao nine years ago He____ at a chemical college at that time

I didn’t know which shirt was better, the black one orthe red one, so I took them .