用括号中所给词的适当形式填空

1. He __________(not do) his homework on Sunday morning.              

2. Yesterday I __________(visit) an old friend of mine.                  

3. His mother wants her little child __________(drink) milk every day.  

4. Tina didn't come only because of her __________(ill).              

5. Having a balanced diet is a matter of great __________(important)．

6. France is a good place __________(go) sightseeing.                  

7. Mr Wang is __________(leave) for New York tomorrow.                  

8. He just finished __________(write)a letter to his friend.          

9. -I'm sorry I forgot __________(post) your letter on my way home.  

    -That's OK.I will do it myself this afternoon.                  

10.I'm thinking about __________(go) to the north for my holiday.

下列中产生黑色素、恶臭味及不发酵碳水化合物的为（）。

A.卟啉单胞菌属

B.普氏菌属

C.密螺旋体

D.梭杆菌属

E.放线菌属