Last month, our science teacher suggested starting an environmental club.Ten students volunteered,and we called ourselves “ The Green Team ".Our first project was cleaning up Central Park,which had become 1 with trash after the spring festival.
When we arrived early Saturday morn 1-ing,we couldn' t believe our eyes.Plastic bags 2 from tree branches like strange leaves,and food containers were everywhere.
As we worked,little Maria found a duck 3 in a plastic ring.Its leg was hurt.We carefully cut the plastic away and called the wildlife rescue center.
By noon,we had coll lect ed 30 bags of trash.The park keeper showed us how different materials should be separated for
4 .“ Glass goes here,paper there,"
he explained patiently.
Now we 5 the park every two
weeks.More classmates have joined us,
and the park stays much cleaner.Our
small effort is making a great difference !
1.A.fills B.filled
C.fill ling
2.A.hung B.hangs
C.hanging
3.A.struggling B.struggled
C.struggles
4.A.recycling B.recycle
C.recycled
5.A.clean B.cleaned
C.have cleaned

BAAAA

1. 考查固定搭配“become filled with”，表示“被……充满”，选B。
2. 此处描述过去看到的景象，塑料袋挂在树枝上，用一般过去时，“hang”的过去式是“hung”，选A。
3. “find sb./sth. doing sth.”表示“发现某人/某物正在做某事”，用现在分词struggling，选A。
4. “for”是介词，后接动名词recycling，选A。
5. “now”提示用一般现在时，主语“we”是复数，动词用原形clean，选A。

1.We need to save the earth because it's the only home for us.(对画线部分提问)
we need to save the earth?
2.Mary finally put up the tent with Mike's help.(对画线部分提问)
Mary finally put up the tent?
3.She left her hometown 3 years ago to work in the city.(改为同义句)
She has from her hometown for 3 years to work in the city.
4.你把垃圾分为可回收和需要丢弃的了吗？(完成译句)
Have you divided the waste into things to recycle and things to ?
5.当我们听到消息的时候,他们已经拆除了旧房。(完成译句)
When we heard the news they had the old building.

1. Why do
2. How did
3. been away
4. throw away
5. pulled down