infirm

"My friend told me there was something in the box, but I didn't know what it was yet. "

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

"The science teacher conducted an experiment to demonstrate how plants grow in different types of soil. "

"His testimony contradicts hers."

"The probability of passing the math test is high if you study regularly. "

"The coach was confirming the players' dedication by making them practice harder. "

"My hypothesis is that the children's improved test scores are due to the new study techniques they learned in class. "

"The teacher's observation of the student's progress showed that he was struggling with math. "

"The student was irresolute about which college to apply to, unsure of which program would best suit her interests. "

"We would like to go skiing, but it depends on the amount of snow."

"The increases in the price of milk were a surprise to the grocery shoppers. "

"My sister reasoned that if she studied harder, she would get a better grade on her test. "