1. Укажите have/has: The railroads _____ a switch which is a very important element of...

Question

1. Укажите have/has:
The railroads _____ a switch which is a very important element of the track.
2. Укажите is/are:
The track ______ one of the basic feature of a railway.
3. Укажите do/does/am/are/is:
_____ the development of a country depend on transport?
4. Укажите doesn't/ don't/aren't/isn't/am not:
If the engine _____ efficient, the losses of energy are large.
5. Задайте вопросы к предложению:
The choice of the monorail type depends upon climatic conditions, the territory, the number of passengers and so on.

Answer 1

1 have 
2 is
3 does
4 isn`t
5 
Does the choice of the monorail type depend upon climatic conditions, the territory, the number of passengers and so on?
The choice of the monorail type depends upon climatic conditions, the territory, the number of passengers and so on,doesn`t it?

Answer 2

1) has 2) is 3)does 4)isn't 5)What choices depend of the monorail type?