blocker

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

"My sister brought several books to the library, and that one is about dinosaurs. "

"The heavy box fell and fallen to the floor. "

"The traffic is slow during rush hour."

"The algorithm used to find the quickest route through the city's subway system is a fast-growing tree. "

"a block of ice"

"The travel agent has the power to book flights and hotels for us. "

"The instructor is busy. Can anyone else help me?"

"He used to be a major in the army."

"The cat slept on the rug. "

"The lightning caused thunder."

"a block of ice"