根据句意及所给的汉语提示，写出单词或短语的正确形式。

1. "I've ______ (长大). I can help with some housework." she said to her parents.

2. Please ______ (打开) the lights, it's too dark.

3. Our government has made several ______ (法律) to protect children.

4. If you keep ______ (表扬) him, he won't know who he is.

 5. Knowing how to ask for information ______ (有礼貌的) is very important and necessary.

危重病人一般不宜进行MRI检查，是因为（）。

A.在扫描中不易观察病人的情况

B.一般的监护仪器不能在MR室内正常工作

C.MRI检查时间过长

D.危重病人常常难以配合检查

E.以上都错