He didn't lose his heart for future.
举一反三
- The young technical innovators didn’t lose heart although the new system was still not ________________.
- They didn't lose heart ( ) they failed seven times. A: so B: and C: because D: although
- Although most people ignored his ambition , he did not lose heart and still worked hard on his project
- Though he (fail) ________ many times, Paul didn’t lose heart.
- He didn’t _____his homework until midnight.