<span>1. дежурный, <span>дежурить, </span><span>дежурство</span></span>
<span><span>2. <span>Светит, <span> свет, светает,</span><span>светлеет,</span><span>светлый</span></span></span></span>
<span><span><span><span>3. <span>тенистая, <span>теневая, </span><span>тень</span></span></span></span></span></span>
<span><span><span><span><span><span>4. <span>редеть, <span> редкий, <span>редко, <span> редкость</span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span>5. <span>опасный, <span>опастно, <span>опасение, <span>опасность, <span>безопасность.</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>