2. 外语
  3. It is necessary that the students ________________(做更多的练习).

It is necessary that the students ________________(做更多的练习).

admin2009-04-23  66
问题 It is necessary that the students ________________(做更多的练习).
选项
答案(should) have more exercises to do
解析 此题注意用虚拟语气．主语从句中的谓语用(should)+v．的表达形式。
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大学英语四级

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