If you ________ carry with you the belief that whatever you do is right, it’s none of my business.

I am feeling sick now．I ________ so much chocolate．

One of our rules is that every teacher      wear school uniform while attending the school flag-rising ceremony. 

 I didn’t know Headmaster Weng was away for Beijing. I       to his office yesterday.

You __ drive your car so fast. It's very dangerous.