The fact that she was foreign made __________ difficult for her to get a job in that country.
— Shall I open the window to let some fresh air in? —No,________ .
If you don’t know that _____ is the mother of success, you are sure to be _____ in life.
It is everyone’s duty to ______the rules of our school.
It is very ______ that she will ring me tonight.
I regret ______ you that my daughter has already regretted ______ out with you. So leave her alone and don’t bother her any more.