I know everything and___trying to cover up
We ________ last night, but we went to the concert instead.
-----I think you'd better type this letter again before Mr. Smith sees it. ------_____Oh, dear!
It is on the festival occasions _________the family get together _______he misses his late father.
There is a new problem involved in the popularity of private cars ______ road conditions need ________.
---I'm sorry. I_____ at you the other day. -----Forget it. I was a bit out of control myself. A shouldn't shout B. shouldn't have shouted C. mustn't shout D. mustn't have shouted