[ Grammar ]
the bones in the chest, neck, and head and the cavities of the throat, nose, and mouth, which reinforce sound
A. reason
B. repeaters
C. resonators
D. regulators

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Perfect Tenses › ViewWe _______ to see the doctor all morning.
A. had been waiting
B. have been waiting
C. will have been waiting
Grammar › View
Working out at a gym at least three times a week makes Arnold ____________, and that’s why he attracts many girls.
A. strongly
B. strong
C. strength
D. strengthen
