Задайте общие, разделительные, другие и особые вопросы. 1. The Kuibyshev Railway

1. The Kuibyshev Railway carries about 80 million passengers annually.
Does the Kuibyshev Railway carry about 80 million passengers annually?
The Kuibyshev Railway carries about 80 million passengers annually, doesnt it?
Does the Kuibyshev Railway carry about 80 or about 60 million passengers annually?
How many passengers does the Kuibyshev Railway carry annually?

2. The railway tunnel linking Great Britain and France was officially opened for traffic on May 7, 1994.
Was the railway tunnel linking Great Britain and France officially opened for traffic on May 7, 1994?
The railway tunnel linking Great Britain and France was officially opened for traffic on May 7, 1994, wasnt it?
Was the railway tunnel linking Great Britain and France officially opened or closed for traffic on May 7, 1994?
When was the railway tunnel linking Great Britain and France officially opened for traffic?

3. The engineers continue to work on the problem of increasing passenger trains speed.
Do the engineers continue to work on the problem of increasing passenger trains speed?
The engineers continue to work on the problem of increasing passenger trains speed dont they?
Do the engineers continue to work on the problem of increasing or decreasing passenger trains speed?
Who continues to work on the problem of increasing passenger trains speed?

4. A new bi-level dome car has been designed specially for tourists.
Has a new bi-level dome car been designed specially for tourists?
A new bi-level dome car has been designed specially for tourists, hasnt it?
Has a new bi-level dome car been designed specially for tourists or for home passengers?
Whom has a new bi-level dome car been designed specially for?

5. Yartsev suggested using cast iron rails instead of wooden ones in 1788.
Did Yartsev suggest using cast iron rails instead of wooden ones in 1788?
Yartsev suggested using cast iron rails instead of wooden ones in 1788, didnt he?
Did Yartsev suggest using cast iron rails instead of wooden ones in 1788 or in 1798?
What did Yartsev suggest in 1788?