Challenge I. Situational--use.

1. The island offers such a wide ______________(various) of scenery and wildlife. 

2. When we eat processed,or ___________(preserve) foods, we weaken our immune system and our resistance because these foods have been stripped of necessary nutrients and fiber. 

3. If we want to master the _____________(advance) skills, we should start from the basic skills.

4. Look out! Don’t___________________(离得太近) the house_____(引导词)roof is under repair.

5. It is difficult to separate out each of these areas of development because they are ____(close) linked with one another.

用wh-ever词填空，并分析分别引导的是什么从句。

(1)____ one of you breaks the window will have to pay for it.

(2)These wild flowers are so special that I would do_________I can to save them.

(3)_____________ you say, I won’t believe you.

(4)Every year, _______________ makes the most beautiful kite will win a prize in the Kite Festival.