A1 Complete the passage with the given words in their proper forms. 用括號中所給單詞的適當形式完成短文。
Last week, our class learned about water pollution. The teacher said clean water is very (1)
useful
(use) for life, but some rivers are (2)______
full
(fully) of harmful things. We also learned that pollution has (3)______
indirect
(direct) effects. For example, factories might not pollute rivers directly, but their waste can still harm fish. At the end of the class, the teacher showed us a photo of a fish weighing five (4)______
kilos
(kilo). He said pollution made it sick.
This Thursday, Lily gave a (5)
presentation
(present) about water (6)______
treatment
(treat) methods. She explained how special (7)______
chemicals
(chemistry) can clean dirty water. At first, I thought it would be (8)______
boring
(bored), but her talk was actually interesting!
