在横线上填入所缺部分，使句子完整（注意：每空不止一个单词）。

A. 同义句改写

1. Nick was so tired that he couldn't walk any further. 

    Nick was _________________ any further. 

2. We can't finish the project on time unless you support us. 

    The project can't be finished on time __________________.

3. Shall we watch the exciting ping-pong match together? 

    _________________ watch the exciting ping-pong match together?

B.根据所给汉语和句子意思，用英语补全句子。

4. As we all know, waste water and gas __________________ (对……有不良影响) the environment.

5. A pair of pandas __________________ (赠送) to Australia months ago, which represents the friendship

    between Australian and Chinese people.

6. — Do you often use Baidu? 

    — Yes, it's one of ___________________ (最受欢迎的) Internet search engines.