题目内容
Fill in the blanks with the verbs in their proper forms(用所给动词的适当形式填空,词数不限):
By the end of 1990,they ______ (set up) four primary schools and two middle schools.
答案:had set up
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题目内容
Fill in the blanks with the verbs in their proper forms(用所给动词的适当形式填空,词数不限):
By the end of 1990,they ______ (set up) four primary schools and two middle schools.