He’s been in China for two years. And he’s used to _______ in China.
---He didn’t catch the train, did he?-- _________, because he was caught in the rain.
The book is________ interesting________ I can’t even drop it for a minute.
--- Oops! I put in sugar _______ salt. --- It’s OK.
Don’t lose ______ in the computer games, boys!
I often see him _______ uniforms.