drumming

"communication of a secret"

"The researcher studied the effects of different study methods on student test scores. "

"Growth was dampened by a softening of the global economy in 2001, but picked up in the subsequent years due to strong growth in China."

"The chef specialized his menu, separating the vegetarian dishes from the meat dishes. "

"The constant noise from the construction site made it hard to concentrate on my homework. "

"The factory produced 1000 cars last week. "

"He will need lots of practice with the lines before he performs them."

"The twins resemble each other."

"Scientists use hydrophones to listen to whales in the ocean. "

"The earthquake's reverberation caused the entire house to shake violently. "

"The teacher signaled the end of the test by ringing a bell. "

"The muscle contraction during exercise resulted in a temporary reduction in the size of the arm. "