When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work

She ______ another match and in the light she made her way without making any noise.

What are the differences _____the red iPhone 7 and other models–They are just different _____ colour.

It is obvious that John is unhappy_________, it comes as no surprise that she has decided to change her job

It is required that under no circumstances ______ betray ourselves even if there are temptations like money or beauty.