一 用括号中所给单词的正确形式填空
1. She (be) a member of the Green City team since last summer.
2. They (help) in the library for two hours.
3. He (not take) part in any activities since he moved to another city.
4. We (collect) old books for the children for three months.
5. I (not see) my partner since last weekend.

一、1. has been 2. have helped 3. hasn't taken 4. have collected 5. haven't seen

二、短文填空
从方框中选出恰当的单词并用其适当形式填空，使短文通顺、意义完整。每空仅填一词，每词仅用一次。
|if|government|on|member|use|important|hard|lead|these|money|
|----|----|----|----|----|----|----|----|----|----|
Li Jin grew up in Sanya. For the past few years, he has worked to protect the waters and beaches of Sanya. He now social media to teach people about environmental protection.
In 2014, he started volunteering to clean the beaches. He became an official volunteer in May 2017 and a clean - up project on the Sanya River.
In April 2021, he used his own to create a volunteer center. The center has more than 800 who help for free. So far, Li Jin has spent over 3,800 hours volunteer events.
Over 2,300 people joined his activities. His team has organized beach clean - ups with about 1,800 people. Years ago, the Sanya asked him to make short videos with simple words. videos teach people how to protect the environment. They have been watched millions of times so far.
Li Jin said, “ I got paid, my work would not feel special. Helping the environment is very . I will keep doing this work. ”
6. 7. 8. 9. 10.
11. 12. 13. 14. 15.

二、6. hard 7. uses 8. led 9. money 10. members 11. on 12. government
13. These 14. If 15. important