Used to________ his car in all kinds of weather, he is really a good driver.
I’m waiting for the mail. Do you know _____ it will arrive?
His parents died when he was young, and he was_____ by his aunt.
–Did you plan to meet here? -- No, we met ____.
We don’t doubt _____ he will succeed in the research work.
LiMing speaks very good English _____ he were an English boy.