1 . The advertisement calls on people to adopt a healthy diet to resist ___________ (infect). (所给词的适当形式填空)
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2 . The virus can also be spread by hands __________ (infect) with the virus. (所给词的适当形式填空)
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3 . Do not rub, as this may break any blisters and the wound may get ________ (infect). (所给词的适当形式填空)
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