听短文，根据短文内容选择正确答案。
Mike is ________.
A. a teacher      B. a worker      C. a student
He is good at _________.
A. writing letters
B. protecting the environment
C. drawing pictures
He has asked the factory to ________.
A. stop polluting the lake   B. move away    C. pay much money
How many kilos of waste paper has he collected so far?
A. 2,000.      B. 50.     C. 15
He donates money to Greener China by ________.
A. planting trees
B. holding charity shows
C. selling wastes