Did you attend Mary and Tom’s wedding ceremony? -Yes，but as you know，they________each other no more than 3 months

I have searched _____ for the book but couldn’t find it [ ]

As far as I am concerned, education is about learning and the more you learn, _____.

your cousin, Kate–She broke her leg and ______ medical treatment since.

Never lose heart __________ difficulty you may meet with.[ ]