用所给词的适当形式填空。

1. Look!The cat is ________ (sit) on your chair.

2. My family ________ (be) a big one. 

3. Li Ming often ________ (do) homework at 7:00 in the evening.

4. I think you have too many ________ (cloth).

5. Lily often ________ (have) breakfast at 6:00 in the morning.

6. Look at this picture.I am ________ (eat) an apple.

机关、单位对所产生的国家秘密事项，应当按照国家秘密及其密级的具体范围的规定确定密级，同时确定（）。

A.解密条件

B.保密期限

C.解密时间

D.知悉范围