Ⅰ. 根据句意及中文提示完成句子
1. Rainforests play an important ______（作用）in keeping earth's air clean by absorbing CO₂.
2. "______（想象）what it would be like to live on Mars!" said the astronaut.
3. Desert plants can survive for months ______（没有）water.
4. They work every day ______（除了）Sunday.
5. The movie shows how ______（气候）change is affecting polar bears' hunting grounds.
6. The ______（重要性）of bees in pollination surprises many students.
7. Watching the stars at night filled her heart with ______（快乐）.
8. Firefighters took quick ______（act）to save the forest animals.
9. All living things in the forest are ______（连接的）through food chains.
10. Though we can't see the ______（微小的）bacteria, they are of great importance to soil health.

role
; Imagine
; without
; except
; climate
; importance
; happiness/joy
; action
; connected
; tiny

Ⅱ.用所给单词的正确形式填空
1. Scientists were ______ (disappoint) when the Mars rover(探测器) found no signs of life on the planet.
2. The monkeys were the ______ (lively) creatures in the whole rainforest!
3. Dolphins use special clicks ______ (communicate) with each other underwater.
4. ______ (protect) endangered animals is everyone's duty.
5. Bees work very hard all summer in order ______ (store) honey for the winter.
6. Humans produce over 300 million ______ (ton) of plastic waste yearly.
7. Unlike animals, ______ (human) are the only species that can protect or destroy nature through their choices.
8. Plastic pollution in ______ (ocean) kills lots of sea creatures every year.

disappointed
; liveliest
; to communicate
; Protecting
; to store
; tons
; humans
; oceans