2. 外语
  3. He is taking classes in car (maintain) ______and repair.

He is taking classes in car (maintain) ______and repair.

admin2013-10-30  45
问题 He is taking classes in car (maintain) ______and repair.
选项
答案maintenance
解析 此处空格与后面的名词repair并列，所以应该用其名词形式。
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