按要求变换句型。

1. I saw the film 2046 just now. (用just做状语)

    I _____ just _____ the film 2046.

2. I've read this book. (改为一般疑问句)

    _____ _____ read this book?

3. She's already done her homework. (改为否定句)

    She_____ _____ her homework _____.

4. I've known him since he came him.  (对划线部分提问)

    _____ _____ _____ you known him?

5. Has Danny come? (作否定回答)

    _____, he _____.

在制定宣传计划中，（）能起到降低宣传费用增强宣传效果的作用。

A.选择宣传媒介

B.确定目标客户

C.制定宣传预算

D.确定宣传进度