对疑似甲类传染病人在明确诊断前，应在指定的场所进行

A．医学观察

B．留验

C．隔离

D．访视

E．就地诊验

根据括号内的要求完成句子，每空一词（含缩写）。

1. Is Jenny your daughter? (作否定回答)

    No, _________ _________.

2. I have three notebooks. (改为一般问句)

    _________ you _________ three notebooks?

3. Those are oranges. (改为单数句)

    _________ is _________ orange.

4. These are his pencil sharpeners. (改为否定句)

    These _________ _________ his pencil sharpener.

5. My pencil case is in my backpack. (对划线部分提问)

    ________ ________ your pencil case?

6. His balls are black and white. (对划线部分提问)

    ________ ________ are his balls?