用所给单词的适当形式填空。  

1. We ___(play) football yesterday afternoon.

2. We should keep ___(diary)every day.

3. He invited me ___ (go) to a movie.

4. Do you know the girl ___ (name) Mary?

5. He wants her daughter ___(be) a nurse.

6. Our teachers told us       (finish) homework on time.

血清钾浓度低于_______mmol／L称为低钾血症，血清钾浓度高于_______mmol／L称为高钾血症。