题目内容
5．Theystudied（study） for the math test yesterday．分析 他们昨天为了数学考试而学习了．
解答 答案：studied 此题空格处在句子中作谓语，由yesterday可知此句子是一般过去时，所以谓语动词要用过去式；此题中给出的动词是study，它的过去式是studied．
点评 此题考查yesterday是一般过去时的标志词，一般过去时的句子谓语动词要用一般过去式．
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