On the plus side, bio-fuel production has helped some farmers and workers ____ their incomes and develop their businesses.
举一反三
- Some small businesses have neither the time ________ the resources to compete with these big businesses.
- Every drug has some side effects.
- Some domestic manufacturers are busy increasing production, losing the chance to develop more (advance) ________ technology.
- Authorities should help farmers increase their incomes and promote (economy) ____________ development.
- Playing at Live 8 has helped some of the artists to sell a lot of records.