simmering

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

"After running the marathon, she collapsed from sheer exhaustion. "

"If the vase falls to the floor, it might break."

"My sister is very helpful, especially when it comes to organizing things. "

"It was worth the attempt."

"The United States is in an awkward situation with debt default looming."

"After many years of hard work, Maria received a promotion to senior manager. "

"The soup simmered on the stove."

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

"The teacher announced that there would be no school tomorrow due to the snow. "

"My brother's constant bragging about his good grades fueled my resentment. "

"He was greatly agitated by the news."