——Mum, may I have some cakes?——Sorry, there’s ____ left in the box. I’ll go and buy some for you tonight.
It is silly ______ you to give up ______ to America for further study.
Would you like to __________us in watering flowers?
I have decided ________her for her mistake____ everyone makes mistakes in life.
We should be strict _______ ourselves ______ our work.
We could not understand them because of us know their language.