Final answer:
The missing phrase in the statement is 'ayudar a, aprender a', which means 'to help, to learn'. The speaker wants to help those in need but believes that they must first learn to listen to others.
Step-by-step explanation:
The missing phrase in the statement is ayudar a, aprender a, which means 'to help, to learn'. So the complete sentence would be 'Quiero ayudar a los carenciados, pero primero tengo que aprender a escuchar a los demás.'
This phrase indicates that the speaker wants to help those in need but believes that they must first learn to listen to others.
For example, they may feel that it is important to understand the needs and perspectives of the people they want to help in order to provide effective assistance.
Learn more about Spanish Grammar