I have two cats. One is black, and ______ is white.

---Why not wear your miniskirt, Rose? --- Well, my legs are too thick, if you ______ know.

They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.

--- We want someone to design the new art museum for us.--- ____ the young fellow outside have a try?

One of the National Health Regulations is that public schools ______ actively create conditions for sports facilities opened to the public.