4 . Water pollution levels increased, with more household and commercial waste ending up in the river. (英译汉)

6 . 根据语境，选择下框中的单词或短语，必要时用正确的形式填空。框中有两个多余的单词或短语。

prove     go through     defense     keep track of     generous     go off     have access to grateful     commerecial     belong to

1. Carl stayed with a__________family who offered him bread with homemade butter and honey.
2. Kiao Bo is looking for an exercise app to__________the steps he takes.
3. After the war, the kingdom was left in ruins, with all of its__________completely destroyed.
4. Festivals are becoming more and more__________, with businesses taking advantage of the celebrations.
5. It is important to bridge the digital divide and make sure that everyone__________the Internet.
6. As my body ached all the time, I__________a two-hour medical treatment.
7. My favourite singer just won a music award. This__________that all the effort she put into her work was worth it.
8. To be frank, the fireworks__________throughout the night were really annoying.

9 . 随着商业利用了这些庆祝活动，节日变得越来越商业化了。
Festivals are becoming________, with businesses________ the celebrations.