Помогите задать общий вопрос к предложениям

2) Did John come to Moscow as a tourist
3)Are the tourists standing outside the gallery
4)Is the museum open from 10 a.m to 6 p.m.
5)Would we like to travel more
6)Can Ben arrange our trip
7)Did we see a nice film on Tv yesterday
8)Will my parents build a house in the country next summer
9)Does Mary enjoy hot weather
10) Is London one of the oldest cities in the world