用所给单词的反义词完成句子。

1. Look at the palace. It's eight hundred years old. It's very ________. (young)

2. Come and look _________ the window. (outside)

3. Please _________ beside the tree. (stand)        

4. Look at the baby, he becomes __________. (loud)

浇筑前对混凝土的质量要求是（）、（）。