题目内容：

 

1.The heavy work _______ ( affect ) his health, so he looked much older.

2.The teacher told him                (not sleep) in class.

3.He used _______ (get) up late, but now he is used to getting up early.

4.__________ (take) a walk after supper is good for our health.

5. He is feeling tired now because he  __________(interview) five people today .

6.__________（improve）his English， he often practices hard.