Question

Подчеркните модальные глаголы и их эквиваленты

1. If customers aren't happy with a product or service, or if they can't afford it, they go to a competitor.
2. There must not be anything that helps one company stay in the market and blocks others from trading.
3. In a market with perfect competition, there are many companies supplying the same good or service, but none of them are able to control the price.
4. An important deciding factor about what you will buy is the amount you have to spend.
5. The government may decide that a competitive market is not good for a certain industry.

Answer 1

1) cant
2) must not 
3) able to
4) have to
5) may