His aunt’s letters ________ memories of those beautiful days when they used to live together in his hometown. 

Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.

The memory of the holiday spent in Europe with her husband will _____ all through her life.

You’d better_  your scores and see if you have passed the exam.                       

About _______ gene-targeting drugs are already in testing pipeline. It won’t be long ______ they are put into effect.