Which phrase best completes the paragraph with a sentence in the conditional mood? Washington DC has many wonderful museums and galleries in the national mall has many monuments that honor United States presidents and veterans. There is one memorial that stands high above the mall-the Washington monument.It is 555 feet tall. Visitors can take an elevator to an observation deck at 500 feet above the ground and then visit the monuments museum at 490 feet make sure to visit the Washington monument 1. Of all attractions in Washington DC 2. If you ever visit Washington DC 3. When you are in Washington DC 4. At your first opportunity in Washington DC s