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"Gymnastics was a significant part of the physical education curriculum."

"The sugar factory uses a centrifugal to efficiently separate the raw sugar crystals from the molasses. "

"My grandmother taught me how to bake cookies when I was a child. "

"You can use these two batteries interchangeably in this flashlight. "

"The children physically exhausted themselves playing tag in the park. "

"He discovered penicillin largely accidentally."

"The apple fell from the tree due to gravitation. "

"His exclamation of "Wow!" showed his surprise at the unexpected gift. "

"My aunt is grandparenting her niece for the summer while her parents are at work. "

"a successful use of medicine;  a successful experiment;  a successful enterprise"

"My frustration grew as my teacher kept pointing out my mistakes in front of the class. "

"The teacher emphasized the seriousness of failing the final exam. "