根据中文提示，完成下列句子，使句子意思完整、语法正确。每空限填一词。

1. Running is my favorite sport and it can help to _______ me _______. (使…强壮)

2. Is the boy _______ _______ (喜欢) collecting toys?

3. Your must ask your brother not to ________ _______(熬夜) late at night.

4. As a doctor, I think ________ ________ (关心) the patients is my duty.

5. Tigers and lions both ________ ________ (以…为生) small animals.

6. When you look up a word in a dictionary you must ________ _______ (注意) to the first letter of the word.

7. Last Sunday some workers were ________ ________ (推倒) an old house while I was sleeping at home.

可锻铸铁可以锻造加工。