Which person has helped you the most to get where you are today, and how has heor she helped you? Use example to support your response.

20 in 30

Well, you will need to find a way to remove 'ehn'

Suggested:
1. Do more intensive listening:
http://www.testbig.com/toefl-basic-listening-practice
http://www.testbig.com/toefl-intermediate-listening-practice
http://www.testbig.com/toefl-advanced-listening-practice

2. Do more extensive listening, like:
Listen to radios like VOA, BBC, Watch TVs like CNN

3. Find a speaking partner and talk more

4. Read some English magazines, newspapers, blogs... and read it loudly