All my pockets have been ________ but I can’t find my keys.

Some retired people have nothing to do. They often get together and ___for hours talking about their past experiences.

The old woman __________ her son and daughters _______ and see her from time to time.

No matter how low you consider yourself , there is always someone ___ you wishing they were that high. 

Evidence gained from observation and experiment is often used to _______ a scientific theory.