He made it a ___ to bulid a successful business on his own in his district.
举一反三
- He built up the business at the ______ (expensive) of his own health.
- His business was very successful， but it was at the ________ of his family life.
- The writer started his own business after he graduated from Harvard University.
- 中国大学MOOC: He built a pair of wings of a size suitable to _______ his own weight, and made use of gravity as his motor.
- He had a shop of his own. It was ______ shop. A: his own B: his's C: his' own D: his'