An _________ disease can be passed from one person to another, especially through the air you breathe.
A. infectious
B. infected
C. infection
D. infect
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My jacket got__________ on a rosebush.
A. attracted
B. hooked
C. infected
D. aim
Global warmingis one of the most serious __________ we face.
A. challenge
B. challenging
C. challenges
D. challenged
A _________ is a person who gives private instruction.
A. professor
B. tutorial
C. doctor
D. tutor
The company wants toestablish a strong __________image.
A. corporate
B. corporation
C. cooperation
D. cooperated