mandibles

"The patient followed the doctor's instructions carefully. "

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

"He examined the crime scene for clues."

"The British colony in North America eventually became the United States. "

"Hold the pencil like this."

"The carpenter carefully cutting the wood with a sharp knife. "

"The students designed posters for the school fair. "

"My sister goes to the dentist every six months for a checkup and cleaning. "

""Many students have problems understanding fractions." "

"The dentist examined the X-ray of my jawbone to check for any problems with my teeth. "

"The fans, or brushes, create currents in the water that direct food toward the larvae’s mouthparts and help stuff the food into their deeply concealed mouths."

"The spider, a common arthropod, has eight legs with many joints and a hard outer shell. "