【B1】 【B3】

admin2009-09-13  3

问题 【B1】
【B3】

选项

答案welcomes前面加上that

解析 本题辨析关系分句的引导词。如果关系代词在关系分句中作主语的话,关系代词不可以省略。这一题的关键是要看出“...welcomes parents and encourages them to raise questions and voice their concerns as well as to participate appropriately in decision making.”是一个关系分句,修饰environment,
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