.Take an active part in sports or other activities you enjoy____you can meet various kinds of people.

My legs are short, _____ her legs are long.

The old lady’s hand shook frequently. She explained to her doctor ______ this shaking had begun half a year before, and ______, only because of this, she had been forced to give up her job.

The new Hukou(户口) policy, according to some experts, ______ to attract more high-end talents to contribute to Shanghai’s development

Thanks for _______me with my science.