efficacy

"The student's ability to concentrate in noisy environments was crucial for success in the class. "

"The children were excited to go to their classroom in the morning. "

"To help pay her tuition, the college student began to tutor high school students in calculus and physics."

"The program will run smoothly under these conditions: the computer has enough memory and the internet connection is stable. "

"The medicine helped my grandmother feel better after she had the flu. "

"I desire to speak with you."

"The doctor spoke kindly to her patients before giving them their medicine. "

"Our program for today’s exercise class includes swimming and jogging."

"He is a student of life."

"The farmer's fields produced a bountiful harvest of tomatoes this year. "

"Climbing the mountain tested our stamina."

"to raise your hand if you want to say something; to raise your walking stick to defend yourself"