1. In 2005, there were (смысловой глагол) a record 18 new IKEA stores - 15 in Europe and three in North America.
2. It is (вспомогательный глагол) difficult for governments of planned economies to know exactly how much to produce to meet demand.
3. Telephone companies have to (модальный глагол) spend millions of pounds laying cables.
4. Neoclassical economists were (вспомогательный глагол) writing at the end of the 19th and early 20th centuries.
5. The demand for cars has (вспомогательный глагол) decreased because of the crisis.