4 . 根据语境，选择下框中的单词替换句中划线部分的单词或短语，使之意思一致。框中有两个单词为多余选项。

awkward   fluently   explore   quit   senior   expert   advanced

1. The country encourages people to stop smoking.
2. As tour guides, everyday they travel around the old part of the town with their guests.
3. He can speak English as easily, well and quickly as an Englishman.
4. Her illness has reached a further developed stage.
5. We’ll learn how to live in the wild from the person with a high level of knowledge.

5 . 在高中有很多东西可以去探索，我感到比早上自信得多。
There is a lot to ________ at senior high, I feel much more ________ than I felt this morning.

6 . In order to stop the virus from spreading further, the scientist _______________ all possible ways to control it in the past few months. (explore)
在过去的几个月里，这位科学家一直在探索所有可能的方法来控制这种病毒进一步扩散。

8 . Holding the class conference is a good way for students to share (分享) information and ________ ideas.

A．design

B．exchange

C．impress

D．explore