Определите функции глаголов to have, to be, to do

1. SMS is one for the most-used services in second-generation mobile telecommunications systems.
2. Portability does in fact promote competition, it drives down prices, and keeps providers competitive.
3. We have a lot of problems with existing equipment.
4. However, this methodology has proven to be disadvantageous to the CATV companies, because it is extremely difficult to send signals upstream.
5. My friend is to finish working at the mashine by June.

1. SMS is (сказуемое, глагол-связка) one for the most-used services in second-generation mobile telecommunications systems. 2. Portability does (вспомогательный, усилительный) in fact promote competition, it drives down prices, and keeps providers competitive. 3. We have (смысловой) a lot of problems with existing equipment. 4. However, this methodology has (вспомогательный) proven to be (часть сказуемого) disadvantageous to the CATV companies, because it is (сказуемое, глагол-связка) extremely difficult to send signals upstream. 5. My friend is (сказуемое, эквивалент модального) to finish working at the mashine by June.