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<title>第4回課題</title>
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<h1>練習問題1</h1>
<h2 class="happy">「嬉しいこと」</h2>
<p class="happy">休日でも早起きができるようになった。</p>
<h2 class="cry">「悲しいこと」</h2>
<p class="cry">窓開けっぱなしにしてたら、部屋に黄砂がめちゃ入ってきた。</p>
<h1>練習問題2</h1>
<table border="1" width="25%">
<tr><th class="sun">日</th><th class="mon">月</th><th class="tue">火</th><th class="wed">水</th><th class="thu">木</th><th class="fri">金</th>
<th class="sat">土</th></tr>
<tr><td class="yasumi">1</td><td>2</td><td class="yasumi">3</td><td class="yasumi">4</td><td class="yasumi">5</td><td>6</td><td class="doyoubi">7</td></tr>
<tr><td class="yasumi">8</td><td>9</td><td>10</td><td>11</td><td>12</td><td>13</td><td class="doyoubi">14</td></tr>
<tr><td class="yasumi">15</td><td>16</td><td>17</td><td>18</td><td>19</td><td>20</td><td class="doyoubi">21</td></tr>
<tr><td class="yasumi">22</td><td>23</td><td>24</td><td>25</td><td>26</td><td>27</td><td class="doyoubi">28</td></tr>
<tr><td class="yasumi">29</td><td>30</td><td>31</td><td></td><td></td><td></td><td></td></tr>
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<h1>練習問題3</h1>
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<tr><th>Su</th><th>Mo</th><th>Tu</th><th>We</th><th>Th</th><th>Fr</th><th>Sa</th></tr>
<tr><td>1</td><td>2</td><td class="yasumi">3</td><td class="yasumi">4</td><td class="yasumi">5</td><td>6</td><td class="doyoubi">7</td></tr>
<tr><td>8</td><td>9</td><td>10</td><td>11</td><td>12</td><td>13</td><td class="doyoubi">14</td></tr>
<tr><td>15</td><td>16</td><td>17</td><td>18</td><td>19</td><td>20</td><td class="doyoubi">21</td></tr>
<tr><td>22</td><td>23</td><td>24</td><td>25</td><td>26</td><td>27</td><td class="doyoubi">28</td></tr>
<tr><td>29</td><td>30</td><td>31</td><td></td><td></td><td></td><td></td></tr>
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