1. What do people often say? (специальный) Do people often say that St. Petersburg is the "Venice of the North"? (общий)
Who often says that St. Petersburg is the "Venice of the North"? (вопрос к подлежащему)
Do people often say that St. Petersburg or Moscow is the "Venice of the North"? (альтернативный)
2. When does anyhing wonderful happen in St. Petersburg? (спец.)
Does every summer from June to July anything wonderful happen in St. Petersburg? (общий)
Does every summer or winter anything wonderful happen to St. Petersburg? (альтернативный)
What happens to St. Petersburg every summer from June to July.(вопрос к подлежащему)
3. Do they watch the bridges open as boats pass by and fireworks fill the sky? (общий вопрос)
Who watches the bridges open as boats pass by and fireworks fill the sky? (вопрос к подл.)
What do they do as boats pass by and fireworks fill the sky? (спец.)
Do they watch the bridges open or go home as boats pass by and fireworks fill the sky? (альтернативный)
1)am doing sums
2)is cooking
3)reaches
4)is walking
5)is running
6)lays
7)has
8)covers
9)wakes/go/take/brush
10)opened
11) am learning
12) learn
13) are watching
14) watch
15) is sleeping
16) sleeps
17) is riding
18) rides
19) is buying
20) buys
Объяснение: