You can use Expression Manager to pipe the answers of questions into the End message.
Something like:
Your answer to Q1 was: {q1.shown}
Your answer to Q2 was: {q2.shown}
Your answer to Q3 was: {q3.shown}
Your answer to Q4 was: {q4.shown}
Something like:
Your answer to Q1 was: {q1.shown}
Your answer to Q2 was: {q2.shown}
Your answer to Q3 was: {q3.shown}
Your answer to Q4 was: {q4.shown}