题目内容
4．The children got tired after doing so much homework．分析 这些孩子在做了那么多的家庭作业之后，感到很疲劳．
解答 答案：tired．
根据"after doing so much homework．"在做了那么多的家庭作业之后，空格前面的词语是got，是系动词，后面需要跟形容词来作表语，结合给出的首字母提示t，因此可知这句话的意思是"这些孩子在做了那么多的家庭作业之后，感到很疲劳．"综上所述，故填tired．
点评 首先要掌握句子的意思，然后结合具体的题目，就可以确定正确答案．
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There were orange trees twenty million years ago．The oranges were very small，not like the （65）E today．The orange trees probably came from China．Many different kinds of wild oranges （66）F in China today．The Chinese started to raise orange trees about 4，400years ago．
Farmers in other parts of Asia and the Middle East（67）D to raise oranges from the Chinese．（68）B they taught Europeans．The Spanish planted orange trees in the New World（North and South America）．They （69）J them to Florida first．Oranges are a very important crop to Florida today．
In English，orange （70）I both a fruit and a color．We use the name of the fruit for the color．